There is a fee to get on the grounds ($10 for adults/$8 for kids 4 and up), which includes the maze, the big barrel slide, wheel barrel races, climbing hay bales, goats, hay ride and the Little Poppers Play Pen.
Activities that you are charged a fee for are the corn popper, barrel ride, corn shooter and pumpkins!
As far as food, there are a lot of great options - brisket/sausage tacos, corn dogs, burgers, a tater explosion, corn on a cob, sweet tea, freshly squeezed lemonade and made to order kettle corn. At our visit, lines were long, but bring your patience...it's worth it!
I purchased our tickets half off from a deal website ($18), but there are military and group discounts. Please check their website for special promotions. As a family of 4, we probably spent $60 on the grounds, for food, games and pumpkins.
But one of the best things about this place is that you can bring in your own ice chest/food and have your lunch or snacks at a picnic table, in the shade, right on the grounds!
Hope you get a chance to visit, we had a great time!