As cold as it is, I have to agree on both these points, up to about 6 people is survivable and fun, any more and I get the hell outta there.Necromancer Jim said:I think it's your fault. I hate to be an asshole, but you are responsible for the party and it's actions.
Personally, I hate parties. I hate people. Persons are okay, People are shit.
As for the weed thing, don't ever put yourself between the law and a friend like that, make them deal with their shit like that, because people are gonna be reluctant to believe it isn't you breaking the law on that one.
And find some way to apologise to your parents, make the friends pay for the crap they burnt and broke, make them pay for the dry-cleaning, say that they messed x and y up, and that they need to do SOMETHING about it, if they deny it / bugger off, reconsider your friends and find a way to fix it yourself.