Year after year we debate ad nauseum the food on the grounds, it's a very subjective subject and one that stirs up a lot of opinion, distaste(pun intended) and angst.
So FWIW, if your only choice is to eat at a concession on the grounds, then IMO, the place for the past few years that has somewhat healthy choices(read non-burgers, brats and fries) is the one on Celebration Way-I forget the name. They have a fantastic large salad called Ginger Sesame with Chicken and a terrific Turkey Wrap sandwich. This same concession is duplicated at the seaplane base where I had fish and chips which was also quite good. Had a nice cold beer here as well served after 5pm. Try it next year, you won't be disappointed.