When I rented White Pine in Wyoming 3 years ago, i had them do a deli meat, mac salad, potato salad, etc... smorgasbord type lunch. Included water and soda. Basically all you wanted to eat. I think they did it for $14 each. It made it easy for them to set-up/prep and no cooking to wait on. Lunch was 11:00-1:00 . Maybe you could ask them and those who are going if something along those lines could be worked out. Could be dishes of pasta, Lasagna, or ????
Don