My DS has got tickets to go this weekend, we live at the top of the Met line, so I'm not worried about logistics, and he's going with a couple of local friends. I'm not a festival goer and although I've lived in town for many years, I'm a bit nervous about them getting home with thousands of others at closing time. Even at Twickenham you need to get out before the whistle or it takes 2 hours . I've set a curfew of 10pm for him to leave but he's moaning that his friends are staying til the end, so he will have to come back on his own, and he's not a London boy as we moved out years ago. Can any wise mums of teens help me make a decision?