Don't you just love it when other parents decide your rules don't apply to their child?
We're having a sleepover in the holidays for my twin girls birthday. As there is a mix of kids coming of 15, 16 and 17 (the joys of a small village means their mates are a mix of age) I've made clear two rules. If folks don't want to play by the rules then they can either not come, or can leave when some other folks are leaving (the ones that don't want to stay or can't stay because of things on the next morning).
After midnight phones go onto the kitchen counter for charging/to be left. There's 10 of them crashing in the living room, mixed group, so I'm sticking to the sleepover rule of 'no phones' that I've always had.
Secondly although they are allowed the occasional drink I've said they can have 3/4 beers or ciders each max. Cans or bottles only (can't be mixed with anything). No spirits. No huge bottles of anything. It's the same rule I've had for parties since my DS was old enough to have a couple of drinks.
One Mum has decided "I've told her she can keep her phone as she is worried she might want picked up". Erm, no. They can access their phones by going into the kitchen, but no phones in the sleeping area after midnight.
Another has announced that her 16yo prefers vodka and coke so she'll just send her with a premixed bottle. Erm, again, nope. No spirits, and certainly no massive bottles of anything that could have sodding anything in.
It's fair enough to decide your child is not allowed to do something (there's a couple coming that are not allowed to drink and that I understand and support) at someone's house, but not that they are allowed to do something the hosting parent has said no too!