get one of those huge things of ground beef(think they are called
's or chubby's or something. basically 5lbs of beef in a big ass tube), some buns, sliced chz, tortilla chips, some taco shells, some taco seasoning, some eggs, bacon, and spend the rest on booze. As soon as you unpack, make half the beef into patties and grill them and put away in fridge for later. Then make taco meat out of the rest of it and put it away for later.
At this point all you have to cook for meals is breakfast. You can now get as drunk and ruined as you want and just microwave crap up when hungry. Nachos, burgers, tacos, whateves.
That is a very cheap weekend that won't leave you wishing you had different food. I mean, we are talking about a two day thing here, right?