Condo vs. value room is a tough one. I know I couldn't be in any hotel room with my teen and his friends for 7 days without developing a drinking problem. When DD was that age, that was true about 100 times more. (Cheaper, yes, but think of the children, er . . . the adult!
)
Ideas for cooking in the room:
Spaghetti and salad (simple--don't go all out on the sauce or anything)
Cheap steaks or chicken breasts, salad, bread
Sandwiches
Breakfast for dinner (we made this once because my teens were NOT ever getting up early enough to reasonably make breakfast in the room. Favorite dinner of our vacation--so relaxed and easy.
Buy some easy snacks. We always get a frozen pizza or two. DS17 eats a lot at night, and I'm only cooking one dinner. We always make a few simple dinners and all breakfasts in our room. I think it's a nice break from crowds.