If you do decide to get to get lunch in the parks, kids meals are the way to go! They include an entree, 2 sides, and a drink! You can get all of that for less than an adult order with one side and no drink. And, if need something bigger than a kid's drink, get a free ice water! If you want to be super frugal, have your kids order one side and the ice water to eat with their meal, and save their drink (apple juice or whatever) and one side (carrots, grapes, pudding) for a snack later.
Here's a funny example...
This past Friday, I got lunch at the All-Star Movies Food Court. The guy in front of me ordered a kid's grilled cheese and a regular grilled cheese...and of course, they were both the same sized sandwich! So I ordered a kid's grilled cheese and got fries and grapes, plus a small soda, and of course you can refill while you're eating!
Soo....LOL there's a way to save some money!