13th Birthday Games

I`m turning 13 in under a month and I don`t know what games to play. There is 10 people invited and it is a pool party. So far we are playing Marco Polo, Water Basketball and Water Volleyball. We are also going to burn CD`s, we each get to choose a song that we like and the cover will be all of the people at the party. Is this a good idea or not. And are there any other games that we could play. The party goes from 11.00am to 3.00pm.