David, lets make a lists also on whose coming.
drinks (preferred in icebox)---> Johnny will bring the Ice-box and Ken will bring the Drinks and Ice
snacks (chips, jerky, etc)
disposable cups, plates
disposable knifes and forks
Sausage (preferred both Würst regular...) or hamburger patty
Buns (hot dog buns and/or hamburger buns) --> moog55
Condiment (Lettuce, Onion, pickles, relish...)
ketchup and mustard, BBQ sauce etc...
Grills (at least 2 or more from previous experiences)
garbage bag for clean up after...