I'm pretty sure we could bring the grill, meat, cheese, and condiments. We have tables to lay stuff out on, stuff to put the cooked food in, salt and pepper and other grilling spices.

What would be needed:

Hamburger and Hot Dog Buns
Sodas, water
Paper Plates
Nakpins
Small variety pack of plastic silverware
Chips, cookies, etc.

Try to bring a folding chair.