We went last year, and had a great time. Amazing food, and wonderful music.
You'll be purchasing your tickets in advance, and seating is pre-arranged, so don't worry about being first in line. We were there on the same day as a bunch of large school groups, and they let the handful of family reservations in so we could fill up our plates and get comfy before they 'released the hounds'. Made for a much easier morning!
Allearsnet.com has a menu that's pretty representative.