My bedroom is next to the bathroom, separated by a thin wall. When my teenage kids crash around it at night, it stops me sleeping. I've asked them to finish their ablutions by 11 and get in their rooms. Obviously if they quietly need to use the loo later, that's fine. But I want their lengthy evening routines done by 11. They are acting like it's a ridiculous request, and one is pretty much refusing. AIBU?