Shops:
Zack of All Trades contains gifts which appeal to a specific partner. But not swimming suits. Be careful not to keep food to long as it will spoil. By food for consumption that night or that moment.

Sports Shop contains swimsuits and bikinis. After purchasing these suits/beach wear you will unlock them in exhibition mode.

Accessory Shop has sunglasses, hats, shoes, as well as other pertient items. Remember some items decompose rather quickly (flowers) and must be bought to give as a gift that night or later that day. When giving a girl an accessory remember they might not take that item off until the vacation ends or until you start a new vacation.

The Hopping Game:
You can make some extra money by playing this game, which has you jumping across floating pillows. The best way to play this game is by skipping along the pillows. Once one foot touches a pillow you should move forward to the next.

Winning Casino Games:
The best games to play in the casino are blackjack and poker. These games work on standard rules and tips for the games can be found on your favorite search engines.

Extra money:
By playing Dead Or Alive 3 and select a character that also appears in Dead Or Alive Xtreme Beach Volleyball in survival mode. The more wins you have in survival mode, the more money you will start with in Dead Or Alive Xtreme Beach Volleyball.
 

In a volleyball match, the less points the opposing team scores, the more money you will end up getting.

By winning a volleyball game 7 to 0 will earn you 150,000 credits. To ensure you never miss, only use the underhand serve as it is guaranteed to go in. This is a great way to earn money quickly, but requires a lot of effort and a good partner.

Have Leifang - Wear almost nothing:
Wait until after the fourth day for the Oreial swimsuit. It barely covers her skin, but will cost a lot of money (600,000).

Ending bonus:
Finish the game. When you begin a new game, you can immediately advance to the end. Select the LEAVE TOMORROW option at the hotel or pool menu to skip to the ending.

Ending sequence:
Wait for the credits to end to see a extra FMV sequence featuring Zack and the remains of his island.

Bonus music tracks:
You can unlock two hidden music tracks in the game: "How Crazy Are You" (by Meja) and "Is This Love" (by Bob Marley). To obtain them, play through the game once. When you resume that saved game file, these two hidden songs will be available in the Radio Station.

Extra items:
Give a lot of gifts to one character and complete that game. Start a new game on that saved game file and choose to play as the character that received the gifts in the previous game. Those items will be available in your inventory in the new game.

Swimsuits in exhibition mode:
Earn or buy swimsuits in story mode (Zack's Island). The swimsuits that you acquire in that mode will also be available in exhibition mode.
 

Disable commentary:
Enter to the options menu, then change Zack's language to Japanese.
 

Moving your partner:
If you do not like the position in which your partner is standing during a match, you can move them by using the Right Analog-stick.

Lock view:
When viewing a "Gravure" movie or another camera-controlled angle, click the Right Analog-stick to lock and unlock the desired angle.
 

Give any girl a swimsuit:
Buy the gift, then wait until you get to your hotel. Give them the gift, then immediately choose LEAVE TOMORROW. Then, continue your previous game as the person you gave the swimsuit to. It will automatically be in your inventory.

Food:
If your character is not performing very well, take them to get some juice or food to eat. Afterwards, do the pool hopping game to increase their response and enthusiasm.