15th Birthday (Quinceanera) Ideas?

My birthday is in May and I don't know what to do. Usually people have a party but I don't like the whole center of attention thing. Plus, I don't have that many close friends so it would mostly be family and people I hardly talk to (awks). But I do want the dress. I thought about a cruise or something because I have never gone on one, but it might be hard considering my family consists of 6 people.

I want it to be something I won't forget, not like just going to the movies. BTW I'm latina so it would be like my sweet sixteen (big deal). So any ideas or suggestions would help a lot. Thanks!

By CC