How about having hot dogs or coneys on Friday night when most everyone arrives? That way, you won't have to worry about getting in, setting up and then either fixing something to eat or going out to eat. The club will pick up the tab, so there's no cost.
On Saturday morning, the park will do a breakfast, For $3.00 per person you get pancakes, bacon and either coffee or juice.
Lunch is on your own, or we can eat the leftover hotdogs.
Saturday night we can have a big 'ol potluck dinner. Just bring enough for 4-6 people, your drink of choice and we'll all share.