The food at the pool side snack bar was reasonable, I think. A hot dog and fries last year was something like $6. We did not eat at any of the other onsite restaurants.
You get a large sized mini fridge and a micro in the room, so it's really easy to make sandwiches and such if you are trying to save money.
I don't know about the shuttle because we never used it. However, they do post the schedule online so you can get an idea of the timings.