I went to grad nite at US and HATED it! There were way too many people there- I've been to the parks Thanksgiving weekend, and this was worse. Other issue is that when you get that many hyped up high schoolers together, there were ridiculous cases of line jumping and blatant rudeness. I don't know if Disney handles it better, but I think that'll just happen whenever you get that many 18 year olds who are all the center of their own worlds together. For the record, I'm only 19, but I thought it was just horrible. If I had a homeschooled senior, I'd plan a trip at a different time, or just go to a concert with whoever's performing if they'd prefer. I know I would have enjoyed that better.