Our room always looks like a mini-market when we first check-in.
Breakfast--cereal (a box for each child of their favorite and one for me)
Danish and sweet rolls (DH is NOT a cereal eater)
Pop-Tarts
Frozen waffles (which keep well in a cooler, even if they are no longer frozen--as long as they stay dry)
Instant Oatmeal (I use the coffee maker to heat the water)
(I bought a toaster at Wal-Mart for 5.00 to use only for WDW)
Lunch-------Assorted lunch meats
Lettuce
Tomatoes
Peanut butter
Milk
Juice
Cokes
We buy two of the cheap styrofoam coolers to use.
And of course, in the closet, we have te bread, chips, cookies, granola bars, cheese crackers, Little Debbie Snacks,etc.
We take snack foods in our fannie packs to the park. Normally, we eat only one meal a day in the parks--either lunch or dinner and have the other in the room. We never eat breakfast out, because the kids are not big breakfast eaters, so, I quit doing it. They want cereal and more cereal...period.
We spend very little on food in the parks.