So some of you may want to break the norm of the usual hamburger, hot dogs, steaks for grub so here is some thoughts on the matter.
1) Tin Foil Dinner. Before you leave for the festival you can even freeze these bad boys and throw them in your cooler, get meat, potatoes, veggies, onions, mushrooms, etc. whatever you want in your tin foil, then throw it on the grill and eat it later. If you want chicken you may want to cook the chicken separately then heat up your tin foil.
2) Omelette in a bag. Crack 2-3 eggs in a plastic bag, then throw whatever you want in your omelette inside the bag, as youre doing this heat up hot water in a pan then when boiling place the bag inside the water and bam, grab a fork and grub down.
3) Cook bacon ahead of time. Many of us like bacon on burgers, eggs, etc. you can cook your bacon ahead of time, and just heat them on the grill later. Deal with the grease and mess at home, then you have your bacon locked and loaded for the trip. Bacon will do fine if pre-cooked.