This is exactly why we eat in the room. We can sleep a little longer, eat as we get dressed, and be on a bus when we WANT to be. Kroger does affordable grocery delivery and we pack breakfast-y type things in our suitcase. Last trip we packed individual cereal cups and bought milk at the resort for the Little Guy. Fruit can go in your carry-on if you don't want to pack it in your suitcase. Cheese holds up fairly well (esp. individually wrapped cheese sticks) or can go in your checked luggage with an ice pack (put both in a ziplock). Squeezable fruit bags (like applesauce pouches) travel really well in the checked luggage as do fruit cups (in a ziplock of course). There are always granola bars, belvita bars, etc. You don't need a whole lot for breakfast, just enough to hold everyone together until you can get to the parks and do some serious snacking!