Unlock Camp Hyrule Tourney:
Go to the title screen and press Start + Z to get the code screen. Now enter 0EKW5G7U for the code

Special Contests:

At the main title screen hold the Z button and press start. There should now be a selection called "Special Contests" From there you can do a hole in one challenge, as well as password input.

Target Tour Tournament: At the "Special Contests" section type the code CEUFPXJ1.

Hollywood Video Tour: At the "Special Contests" section type the code BJGQBULZ.

Taunt Opponents:
During your opponent's turn press on the D-Pad Up, Down, Left, or Right

Compliment Opponents:
During your opponent's turn press on the C-Stick Up, Down, Left, or Right

Unlock Cheep Cheep Falls:
Use Tournament Mode and win the Lakitu Cup

Unlock Shifting Sands:
Use Tournament Mode and win the Cheep Cheep Torney

Unlock Blooper Bay:
Use Tournament Mode and win the Sands Classic

Unlock Peach's Castle Grounds:
Use Tournament Mode and win the Blooper Open

Unlock Bowser Badlands:
Use Tournament Mode and win the Peach's Invitational

How to unlock star tournament:
Beat all the tournaments, and get all of the trophies (make sure to win first place in all of them). After you get beat the final tournament (bowser championship), it will tell you that you have unlocked the star tournament (which is basically hard mode).

Unlock Boo Character:
Hello anybody wondering one of the secret characters is Boo and he is ready to play so get 50 Birdie Badges And it Will say new Character Unlocked

Super Topspin/Backspin:
In order to do a super topspin preform a manual shot and hit (ab) at the end instead of (aa). The same thing is done for the super backspin except you hit (ba).

Unlock Baby Bowser:
In order to get baby bowser you can either beat ring attack, or you can beat birdie challenge, first on the front 9, then the back 9, then all 18 at once.

Unlock Shadow Mario:
Finish Ring Mode to Unlock him

Star characters:
To get Star characters in 1p mode go to character match then when choosing the cp character pick the one with a envelope beside them beat him/her/it and you have unlocked that star character now when choosing YOUR character press R

Unlock Back 9 holes of Congo Canopy:
Complete the Front 9 holes of Congo Canopy in birdie challenge.

Taunt Players:
On multiplayer use the C-Stick while not your turn to taunt other players

Use Tournament Mode and win the Sands Classic:
How to get shadow mario and petey piranha

To get shadow mario beat all of the the ring challenges for a charachter.Ive done it with yoshi.

to get petey piranha beat all of the side games except the birdie one.

Beat Every Course:
Before you start each hole press start and go down to save that way if you get a bogey or worse you can go back to save and go to end the game. When it gets back to the main menu go to continue and go to the saved data it's on and click on it now you can start over that particular hole that you were just on. It may take a while but it's worth it.

P.S. If you get a bogey or worse do not press save on the next hole if you want to redo that same hole.

Pikmin:
If you hit the ball into a flower patch, Pikmin will fly out. I noticed it on hole 18 of Peach's Invitational.

Perfect Power Swing:
Fans of using Manual swing this code is not for you. If your fond of using auto swing then this code is very effective. Easly watch the small arrow below the number marking at the bottom of your screen. Take the meter clear to Mario's Hands and hit A quickly and make sure that you hit B before you do any of that to make sure that the red golf ball is by your meter that says POWER and hit A again then if you here the smack of Mario's Hands The Perfect NICE SHOT Will occur.

Unlock All Tournaments Easy:
This Cheat is very simple Go into Tournament with any Character and Choose Lakitu Cup.

Complete all 18 Holes In first place and Cheep Cheep Tournament will be unlocked. Do the same thing here but remember you must be placed in first to unlock these levels.Sand Classics will be unlocked after Cheep Cheep Tournament is completed go on there are only four tournaments total. It should take the regular Mario or golf fan that long.