I Dont Know What Song And Steps For The Waltz

My quinceanera is coming soon and i have no idea what song and steps i should do for the waltz or even the clothes cuz i dont want the guyz to wear tuxedos. I`m planning on having all guys too!! and its going to be harder to think of a waltz and after that i want to have a dance with just us like we can dance merengue or salsa or kumbi and we can make up steps for that too but its going to be really hard, do you have any advice for me?? (my sisters and parents arent helping much either)