Almost forgot the most important advice...
Pack your case(s) of beer in your luggage. I can't remember if you can't take in coolers at all or if they were just taking out the beer.
They don't want alcoholic beverages out of the 'beer garden' tent thing where they check your I.D. and give you a wrist band. Bring tons of coozies so you can pack a beer bag as you stroll around during the day. Keep them coozed and the staff won't confiscate your goods usually. Only got 'em swiped a couple of times over the weekend when we got careless with our naked cans.
Or you can go sit in the beer tent with the old people and pay for the 'fancy' brews while listening to the filler performers on the little stage.
Or you might not partake...
All this assuming you're gonna camp out in the trees...you might have an RV...? Although I think I heard all the RV spots were sold out.