E.S.
It depends on what time prom ends and what time they think they'll leave. Mine didn't end till 1am but we left about 12:30am. We did go bowling but most places around Dallas are only open till 2am...though this was several years ago. We rented a hotel for just the girls and brought along movies, a portable dvd player, munchies, and a few games. Plus we did alot of talking...then we got breakfast in the morning:) We did sleep...some:) It was alot of fun and we didn't go for an expensive hotel room, just one that could accomodate 6 of us. I bet many places have adjoining rooms that you could do for a your larger party. Or just go back to someones house and everyone can sleep on the floor. Hope this helps!