Chocobo Paradise
Chocobo's Paradise can be accessed by flying to an island at the corners of the world map. By using a Dead Pepper when facing the crack, you can open it up to get inside. There you will meet Fat Chocobo and all your Chocobuddies.
Return there when you have all the chocograph treausres and have gotten the treasure from every bubble and crack, including the Ultima Weapon. Talk to Fat Chocobo to get his card. Talk to him again pushing the Square button. He'll tell you to go to every beach. Visit each beach in the world, dismount and press the Circle button. Repeat on every beach, you'll hear a chime each time. On the last time, your HP/MP will be restored. You can now do this at any time: go to a beach and be healed. Great for leveling up with harder battles.