in general, there are food carts there with burgers. there is a taco place which I've heard is excellent. if you go up to the plateau there is a spot with chicken and drinks. plenty of options.
Food is usually local venues around the entirety of Philadelphia in and of itself. When I was there it was different venues, street type of foods and some liquor carts as well as local pizza joints
Pizza, tacos, chicken fingers. Rita's water ice.
Unsure. I didn't get any food when I was there last. They did have a variety of places and it smelled good.
For an additional fee they often offer a buffet on top of the hill which is top notch, I've had it several times and was not disappointed
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