Share, share, share! It is really hard to "take it along" if you order too much food. And if it is really warm, that may dull your appetite.
Breakfast in the room (bring it along)..... instant oats, tea, cocoa, snack bars, fruit.... so much faster and easier and CHEAPER than paying $15 for an omelet and toast!
Bring snacks and save your $$ for the real meals..... Clif bars, Z-bars, Nutrigrain bars, granola bars, nuts, raisins, trail mix, crackers. Sure, you will still want a Mickey bar every once in a while.... but when true hunger strikes, the snacks you bring along with be priceless!
Bring along an empty water bottle and plan to refill with free ice water or water from a fountain. Better for the budget, better for the environment!
Does your resort offer any freebies? "Manager's reception" or "afternoon tea"? If you are going to be near/in the resort anyhow, it may be worth stopping by for a free mini-meal or snack!
Remember.... the kids probably do not know what kind of food options are out there, so they may be happy with a peanut butter sandwich and banana at the end of a long tiring day in the parks! I know my kids were! Have a great time!...............P