I varied the ratio a little to: 1 banana, 4 pineapple slices per person (6 people) because everyone said they loved pineapple more than banana. I garnished everyone glass with a fun re-usable straw, a pineapple slice, and a homemade maraschino cherry (I'll put the recipe on later. They're not quite as red, or as sweet as the ones that come in the jars at the supermarket, but they're better for you!). It was a hit!