The standard format of these events is that a group of adults stands around in the garden, discussing how well their children get on, how responsible they are now they've reached the age of 13, and what plans they have for the summer holidays.
Meanwhile, the kids are indoors, getting pissed and throwing up.
Every man and child will stand by it watching the fire and adding wood every five minutes or so while the women drink wine and natter the other end of the garden.