Virgin Pina Coladas are good.

.Ingredients:
•1 cup pineapple juice
•1 cup crushed pineapple
•1/2 cup coconut milk (canned or fresh)
•juice from one lime
•ice to top of blender
Preparation:
Blend ingredients until ice is slushy. Pour into frosted glasses and enjoy immediately.

Or you could make a big jug of punch.

I usually put

Moselle, a tin of Golden circle tropical juice, some cut up bananas, strawberries, kiwifruit or whatever I've got on hand and some Dry Ginger.