we eat outside the world if we are trying to save money. we eat breakfast at either ponderosa or golden coral. they are about 3.99 for the buffet. same with dinners they have cheap buffets on route 4 and 192.
i cant see eating in the room being very cheap or convenient. at the values you have to rent a fridge for 10 dollars a day. thats not cheap, breakfast costs less than that. plus all the supplies, its not something i would do.
lunches in the park can be shared, or even if you dont the counter service lunches arent too bad.