Pro tip: Take your outfit for each night and pack it along with its accessories in a Ziploc bag. Especially theme night wear. You shop hard to put that stuff together, and the pieces can be tiny. After you've been drinking all day, the last thing you want to do is drunkenly paw through all your stuff trying to find one stupid earring, your pasty glue, or the right color booty shorts. Being able to pull out one bag and just put on its contents and go is a lifesaver.
I thought I was the only one that did this. My friends thought I was crazy til we got there and they couldn't find a thing.