Have fun!! Maybe take some Ginger root if you have a sensitive stomach. You will most likely be moving around alot at a concert.
Oh, and if they are "hitting you too hard" you can drink psylicibes out of your system. Water, beer, apple juice, soda, all will flush that magic food out a little faster. Maybe don't try it with Jack Dainels.
Oh man, so intense... the beginning was REALLLYYY good. and then the end wasn't necassarliy bad as much as just being totally baffled and confused by everything around me. hahaha... but man it was awesome.