I'm not sure why you would feel guilty for not cooking in the cabin. It's your vacation - do what you want!
I plan to cook just a few breakfasts. DH does think it's breakfast without eggs and bacon. But that's pretty simple with scrambled eggs and english muffins! Other than that we were going to make simple stuff for the kids like sandwhiches, boxes mac and cheese, frozen nuggets, etc. No big meals, just easy to prepare stuff so we don't have to wait in a line to get food.
Hope that helps