DS is in year 10 so his mates are all 14 and 15.
They've stared having house parties, usually around 30 to 40 kids (not at our house I should add!).
Im happy for DS to go, he's been to a few, he takes a few beers and has never got himself into a mess, he's home before 12.
He's asked DH to buy some alcohol for his mates and they'll give him the money. No spirits, just beer. DH has said yes.
I'm saying a big fat no. It's one thing supplying alcohol to your own DC, another thing entirely to supply it for other people's.