First time going to warped tour, what do i need to know and what do i bring?

Okay guys, this is gonna be my first warped tour and i'm soooo excited. Anything I need to know and what all do you recommend bringing as I do not want to overpack and bring too much stuff. Any help, thanks. =] I'll be at the pittsburgh stop july eighth, and i'm sooo excited for 3OH!3, a day to remember, aiden, bayside, chiodos, escape the fate, hit the lights, jeffree star, madina lake, meg and dia, scary kids scaring kids, senses fail, the maine, the white tie affair, and there for tomorrow. please help guys? :)