Are you bringing any type of stove or grill? I am assuming not since you are hoping to borrow a neighbor's cooking surface but here are my suggestions either way:
Originally Posted by Calientepocket
If access to a grill/stove, pre cook meat and vegetables a day or two before you leave. Cut up the meat and veggies into bite size pieces and store in heavy duty aluminum foil. At the festival throw the foil meat/veggies on a grill/stove/fire, etc to heat up and you are good to go. Makes stir frys, tacos/burritos, or just eat as is. (tip: season meat when pre cooking them and do not need to bring extra seasoning to prepare on the mountain)
If no access to grill/stove, definitely stock up on sandwich good, nuts, granola. I like to bring bagels and CLIF energy bars for times when I need substance but can't eat a full meal. I would also recommend cut up fruit like katiegirl did. Anything that doesn't need much preparation is what you are looking for.
Coachella '10, '11, '12 (week 1), '13 (week 1, week 2 TBD)