First of all, the park has free soft drinks (in addition to free sunscreen) that include Gatorade and lemonade and tea and Pepsi products. That saves you a lot of money right there. Other items are pretty reasonable, like this funnel cake my son got. It was $3.99. Not bad. Order one of those at a festival in the Chicago area and it would probably be $6 or more.
When I looked around at some of the meals, I asked about getting an individual item rather than the combo and found you could do that. So, instead of a meal of about $7 for the pulled pork sandwich, my son got just the sandwich for $3.69. He's on the picky side and wouldn't have eaten the baked beans and cole slaw that came with the combo anyway.
It was the same with the tacos. I don't like refried beans and didn't want a full meal, so I ordered a single hard shell taco and it was $2.79. Later in the day I got a baked potato in the water park for about $3. One of the boys grabbed a peanut butter and jelly sandwich to eat as we walked for $2.29. We ended up spending less on food that we anticipated, but we ate well.
My big splurge was the Hot Diggity Dog, which was around $4.50. It's a hot dog wrapped in bacon on a pretzel bun then covered in cheese sauce and barbecue sauce.