I remember turning up on a half empty Maison Blanche on my first occassion in '94 and looking around us we suddenly realised that we had forgotten three key things: (1) a barbecue, (2) food, (3) beer.
I left Pete sobbing on the campsite and made an emergency dash for supplies, finding a small supermarket on the main road into town which had obviously been ransacked by CA members. I grabbed two packs of brioche buns and three packs of warm stubbies. Hopeless but it got us through the first night.
Moral of the story for newbies: Read the Club Arnage guide and stop at Carrefour on the way in!