Super Mario Sunshine
Gamecube Hints & Cheat Codes
Hints & Cheat Codes
Return to the Airport
Once you've beaten the game (and saved your game), you will be able to go back to the Airport from the very beginning. It'll cost you, though. For the price of 10 coins, a boat close to the clocktower where you find Yoshi will take you to the Airport level -- which is filled with coins and fun stuff to do. Give it a try!
Sunglasses and Hawaiian Shirt
Want to see Mario in a different outfit than his trademark blue overalls and red shirt? How about putting on some shades and slipping into a shirt that would make even Tom Selleck jealous? The shades are easy to get. Look for a man with black sunglasses in the hub world (he's at the beach, close to the fruit stands) or in most of the other levels and talk to him. When certain conditions are met, he'll give you a pair of sunglasses to wear, which will darken your screen appropriately. Note, the sunglasses will disappear the moment you step into another level or restart the game.
The same guy will also give you a Hawaiian shirt -- but you've got to do some work first: finish the game. If you've saved your game after you beat the last big boss, you'll be able to get your shirt anytime you talk to this guy.
To build up Mario's stock, try to quit stages when you are about to die. This would apply to stages like the racing stages (with the Islander who likes to race) and some of the mini-stages (like the Pachinko stage).
If you can restart the stage easily (and quickly), you should learn to quit when Mario is in danger of dying. This will let you have a large stock of lives to tackle stages and mini-stages that you want a lot of lives to spend on (the Dead Leaf in a Dirty Brook mini-stage comes immediately to mind).
You can quickly gain lives once you finish the game:
Start by collecting 10 coins then going to the Airport.
Next, collect 50 gold coins at the Airport.
Now, select quit without saving to return to town.
Head back to the Airport and collect 10 coins to reach the magic 50 mark again.
Repeat ad naseum.
Feed the Yoshi Remotely
If you need to dismount Yoshi for a long time and do not want it to run out of juice, leave Yoshi near some fruit and it will auto-feed itself when it's juice meter dips low.