How to Get Money Money to Start
If you have Dead or Alive 3 use a save game to get as many wins and trophies with one character. Then use the same character in Xtreme Beach Volleyball and you will start the game with more money
Get Swimsuits for Exhibition Mode
Swimsuits you buy at Zack's Island game are available in exhibition mode
Get more Items at Start
Start a game and give all items to one girl. Now finish the game and start a new game with that girl and she will have all the items you gave her.
Get to End Faster
After finishing the game one time you will have a option called "Leave Tomorrow" in the Hotel or Poolside menu
Unlock Music Tracks
Unlock the "How Crazy Are You" by Meja and "Is This Love" by Bob Marley music by finishing the game one time then starting a new game with that saved game.