NOTE: As their name suggests hints are not exactly Wii Sports Resort cheats, and are usually just simple (but very useful) tips on how you can unlock secret level, features, find hidden areas and such. Hopefully these will make playing Wii Sports Resort even more entertaining.
Advanced Archery
To play Archery without a guide circle (for more advanced play), press the 2 button at the loading screen.
Basketball
Play basketball at night: hold 2 on the loading screen
Bowling
To change the Bowling Balls color you must hold the corresponding direction on the D-pad at the loading screen. (Blue is the default color)
Hold Down: Green Bowling Ball
Hold Left: Red Bowling Ball
Hold Right: Gold Bowling Ball
New features in Island Flyover
Collect i points too unlock new features in Island Flyover. These are icons that are found at various points across the island. Every ten new i points collected, a new feature is unlocked.
Balloons appear across Wuhu Island: Collect 10 points
Double Popper (plane shoots two balls instead of one): Collect 30 points
Evening mode for Island Flyover: Collect 20 points
New Starting Location: Collect 80 points
New Whale Shark Design: Collect 70 points
Night mode for Island Flyover: Collect 40 points
Night-time Lighting: Collect 50 points
Two-seater Plane: Collect 60 points
Ratings
Pro level: Get 1000 in any sport
Superstar: Get 2000 points in a sport.
Alternate Modes
Follow the instructions when selecting an event.
11 point table tennis game: Press 2 at loading screen
Advance Frisbee Golf: Hold 2 at loading screen
Advance Golf: Hold 2 at loading screen
Advanced Archery: Press 2 at loading screen
Play basketball at night: hold 2 on the loading screen
play swordplay during the evening: hold 2 on the loading screen
Shoe/Slipper Paddle: Press 1 at loading screen
Hidden Power Cruising courses
Note that if a course is unlocked in Shalom it will not be unlocked in VS, and vice versa the other way around.
Cavern: Play 10 times.
Marina: Play [Power Cruising] 5 times.
Shoals: Play 15 times.
New bowling ball
Achieve Pro level (1000 points) in bowling to get to use a bowling ball with stars on it. The new ball can only be used in events that you have achieved pro level in.
Star bowling ball: Achieve Pro level in bowling
Stamp
Complete any of the Goals required to unlock the stamp.
1-Stage Master: Finish all 1-stage races in first place.
100-Pointer (Return Challenge): Get a score of 100 points or more.
200-point Dive: Get a score of 200 points or more.
200-Pointer (Return Challenge): Get a score of 200 points or more.
3-Stage Master: Finish all 3-stage races in first place.
5,000-pointer (Power Cruising): Get a cumulative score of 5,000 points or more overall.
50-Pointer (Return Challenge): Get a score of 50 points or more.
6-Stage Master: Finish all 6-stage race in first place.
A Cut Above: Beat the Speed Slice champion
A for Effort: Score 10 points with each of your 10 throws to get this stamp
A Secret to Everybody: Hit all the secret targets in every level
Archery Bull Stampede: Hit the center of the target and get 10 points with all three arrows in one stage
Back From the Brink: Successfully return a ball that hits the edge of the table.
Bag of Tricks: Land seven or more different kinds of jumps on a single run
Balloon Animal: During practice, pop all 9 balloons in ten throws or less
Balloonatic: Pop every white balloon at all times of day.
Beginner License: Get to 200 yards in beginner level.
Bonus Plumber: Score every Bonus Ball worth 2 points in 3-point Contest
Buzzer Beater: Make a last-second shot with a "buzzer beater," a basket scored just before the buzzer signals the end of the game.
Camera Shy: Apparently, if you don't manage to catch anybody on your dive, the photographer will come out from behind the camera for a special shot.
Century Shot: Shoot 100 arrows into the target
Cut the Red Tape: Cut the red tape in all levels.
Double Time: Slice the alarm clock when the two digits on the display are the same, such as 8.8, 7.7, or 6.6.
Ducks in a Row: During Canoe pratice, return all of the ducklings to the mother, then complete the next canoe speed race.
Ducky Come Home Stamp: In Canoeing, catch all ducklings and take them to their mother in practice
English Major: Score 170 points or more without hitting a single barrier.
Epic Rally: Keep up a rally (hitting the ball back and forth without stopping) for 30 hits.
Expert License: Get to 400 yards in Expert level.
First of Many: Finish a race in 1st place for the first time to get this stamp.
Follow That Plane: Follow Miguel's guide plane around the island for at least three minutes.
For the Birds: Take a photo with a bird in it.
Friends in High Places: Catch at least 29 Mii characters during your dive, then join them for the final formation and have a picture taken.
Frisbee Dog Good Dog: Throw the Frisbee right into the center of the target area to make the dog jump up and grab it out of the air
Frisbee Golf Under Par: Finish 3-, 9-, or 18-hole course under par
Gobble Gobble: Bowl three strikes in a row to get a turkey.
Golden Arm: Score 100 points with every throw and pop every balloon
Head First: Knock down the headpin in every game.
High Five: Catch and link up with 4 other Mii characters and make sure everyone's face is visible when the camera snaps.
High Roller: Get a score of 200 points or more to receive this stamp.
Hole in One: Throw the Frisbee into the target area in just one throw
Hoop Hero: Take down the champions in a pickup game!
Hot Streak: Score 5 balls in a row in 3-point contest
In Your Face: For some reason, you get a stamp for hitting your opponent's face with the ball.
Intermediate License: Get to 300 yards in Intermediate level.
Island Hopper: Visit any "!" point on Wedge Island.
Last Gasp: Finish a race when you're out of breath.
Last Mii Standing: Defeat the champion in a duel
Leisure Cruiser: Find all the time balloons in one run in single-player Free-Cruising mode, then complete the Slalom Course afterwards to get the stamp.
Lights Out: Drain five 3-point baskets in one game.
Lucky Skip: Get this stamp when a Frisbee bound for water hazard skips across the surface of the water and lands safely on the other side
Master Carver: Score 1,000 points or more on the Expert Level without hitting any obstacles
Met Your Match: Draw three rounds in a row to get to the final battle ring, then draw again for a completely even match in single-player mode.
Not The Face Stamp: In Table Tennis, hit the opponent in the face with the ball
Off the Wall: Hit the gutter guard once and then get a strike.
On a Roll: To pull off a "roll-in," throw your Frisbee from outside the green, hit the ground, and roll it into the goal
One for All: Knock down at least one pin in every frame.
One-Hit Wonder: Push your opponent out of the ring with only one strike in single-player mode.
Perfect 10: Clear Stage 10 without taking a single hit and losing a heart
Perfect Game: Bowl 12 strikes in a row.
Perfect Target: Hit the center of the target area and score 100 points with all ten of your throws
Perfectly Matched: Draw with your opponent in single-player.
Pin Dropper: Score a strike or a spare on every frame
Pin Dropper (100 Pin Bowling): Score a strike or a spare on every frame
Pin Dropper (Spin Controll): Score a strike or a spare on every frame
Pop Frenzy: Pop 150 balloons in the course of one flight.
Power Cruiser: Score 170 points atleast on all courses
Power Jumper: Go through all the bonus rings in the final course.
Psychic Slice: Cut an object correctly before it even hits the ground in single-player mode
Pure Shooter: Sink all 25 balls in the basket with at least 15 seconds left on the clock.
Quick Draw: Finish throwing all 25 basketballs as fast as possible
Recycler: Knock the can off the table with a ball 30 times in one game.
Rim Rattler Stamp: Score three slam dunks in one basketball pickup game
Ringmaster: Go through every single bonus ring on one course.
Save Face: Get a score of 100 points or more without the ball ever hitting the server's face.
Secret Strike: Roll the bowling ball all the way across on the gutter guard
Sharpshooter: Score 10 points with every arrow in each of the 4 rounds
Showdown Not a Scratch: Clear any stage without taking a hit and losing a heart
Slicing Machine: Correctly slice at least one of each of the 18 types of objects in single-player mode
Smooth Landing: Land 10 jumps in a row
Speed Slice Slice and Dice: Win the contest without missing a single object by slicing the wrong way or failing to slice within the time limit
Split Spare: Complete a spare after getting a split on your first throw.
Split Spare (100 Pin Bowling): Complete a spare after getting a split on your first throw.
Split Spare (Spin Control): Complete a spare after getting a split on your first throw.
Straight and Narrow: Play an 18-hole round of Frisbee Golf without throwing any discs out of bounds or into a water hazard
Straight to the Point: Push your opponent out of the ring with a lunge in single-player mode
Super Strike: Knock all 100 down with one huge strike.
Sure Shot: Hit the target with all 3 arrows in each of the 4 stages
Sword Fighter: Defeat all of your foes to clear the first 10 stages
Swordmaster: Fight through the final Showdown stage
Swordplay Duel Cliff-hanger: The final battle ring appears if the two opponents are still locked in a draw after three rounds. It doesn't matter if you win or lose
Table Titan: Beat the table-tennis champion in a match.
The Long Way Home: Land 50 jumps and wakeboard all the way around Wuhu island in Free-Cruising mode
Triple Dip: Score a goal from beyond the 3-point line (Pick up Game).
Under Par: Finish a round of Golf under par
Untouchable: Fight through the final Showdown stage without taking a single hit and losing a heart
Wakeboarding Huge Air: Score 100 points on a single jump
Wuhu Tour Guide: Collect all the "!" points in the daytime, evening, and night.
Swordsplay
2nd Armor: Reach a rating of 1000 (PRO) in Duel Mode
Purple Sword: Hold 1 at loading screen (must have beaten the Swordplays Duel champion)
Reverse Showdown stages: Complete Stages 1-10 on showdown
Samurai Armor: Beat the Champion in Duel Mode
Unlock the Special 3 holes in Wii Golf
Finish each of the 3-hole courses (Resort A, B, C and Classic A, B, C) under par each to unlock the special 3 holes.
Swordplay
Play swordplay during the evening: hold 2 on the loading screen
Swordsplay
2nd Armor: Reach a rating of 1000 (PRO) in Duel Mode
Purple Sword: Hold 1 at loading screen (must have beaten the Swordplays Duel champion)
Samurai Armor: Beat the Champion in Duel Mode
Table Tennis
To unlock an 11 point Table Tennis game hold 2 at the loading screen.
11 point table tennis game: Press 2 at loading screen
Unlock Shoe/Slipper Paddle in Table Tennis
Press 1 at loading screen of table tennis to have a shoe/slipper as a paddle
Secret Strike
In Bowling, during a 100-Pin Game, move your character all the way to the left or right (by using left or right on the d-pad), and roll a ball all the way down the gutter guard without it falling off. If it works, there will be a muted explosion sound, and all the pins will miraculously fall over. After completing the match you get the Secret Strike stamp.