PAX passes (No, really). DO NOT FORGET THESE.
Pokemon X or Y
Charger and Power bar (YES YOU WILL NEED THEM, DEAR GOD)
Other Important Things
Clothes AND COSTUME STUFF
Underwear for at least 6 days
Jacket, hat, gloves (for possible cold weather)
Deodorant & body spray
Good walking shoes!
Vitamin C and hand sanitizer
Snacks (for waiting in line)
Water/Water bottle (Stay hydrated!)
Cell phone/ camera / laptop
Handheld gaming devices, CAH, MtG, Zombie Dice, and any other games you’d want to play
Money to give graciously to Child’s Play via Cookie Brigade.
Also, be sure to get the phone numbers to everyone you will be meeting and rooming with! Don’t get stuck with no way to contact anyone if you get locked out of your hotel room!