Hopefully we will have enough people coming so that each person just brings one thing, unless your bringing a bunch of friends/family, then feel free to bring more. But, I think that 1 person should bring all the condiments and 1 person should bring all the paper products (plates, forks, napkins, and a trash bag or two). Don't buy the paper products at Costco unless you are going to use the rest yourself at home, because there really aren't that many of us (I think there are like 500 paper plates in a package).
Okay, we will need someone to BBQ. I can't convince my husband that this would be fun for him too. He's a muggle (a.k.a. a non-diver). I can't really blame him since I would be leaving his butt on the sand cooking while I had fun in the water.