What should I do for my Sweet Sixteen?

I will be 16 in 4 months. I want to have a party, not a huge one though. I'm thinking about 30 people, probably all girls. I live about an hour from Atlanta, and I'm pretty sure I could get transportation for my friends. Do you have any idea what I should do? It will be almost summer. I love singing, dancing, laughing, theme park rides, water stuff, etc... I don't like bowling or arcades or things like that. Also, a lot of my friends won't know each other, so it'd be better if we didn't do something that requires everyone to know each other, like a big sleepover or something. Thanks:)