We were invited to a neighborhood party last weekend, it was pot luck and they said they would have a grill ready for anyone who would like to cookout. Some just brought a covered dish while others brought a cooler full. We brought more than enough to feed our family and several others plus lots of soda/pop. the party turned out great and we met lots of new and old friends.
ETA: My sister-in-law used to have family cookouts and would ask each family to bring enough to feed their individule (sp) families, meat, buns, salads, chips, pop, cake, etc whatever you would normaly have for your family for a cookout. All of the food was set out at once for one big picnic/cookout. We were all young families & still struggling $$ wise back then. It was a great solution for all.