Clare, don't know if this helps
if i remember rightly (and who knows as much voddie was partaken of!)
we had a volunteer to supply each of the following
burgers baps ketchup and plastic cheese
hotdogs rolls onions
poridge
bacon and bread for breakie
we also brought various items of local specialities, like cornish pasties, leicestershire pork pies, welsh vodka jelly (that never made it out the fridge!) so if theres local fayre bring it on!
so have we got communal cooking stoves or bbqs? or do we need to bring individual disposable ones?
various cooking and eating implements were quite handy too, a washing up bowl, sharp knife, old frying pan and/or saucepans, disposable plates, cups glasses and napkins.
oh, and plenty of booze!