If we’re looking after them in their own homes, mum and dad’s rules apply. Things can be different at ours, some things we’re more lenient on, some stricter, and they do get more treats, film afternoons with popcorn etc here. We’re all strict as far as good manners and eating at the table are concerned, but we’re none of us overly houseproud, so we’re on the same hymn sheet as far as making a bit of a mess is concerned (easygoing). If they’re staying over, particularly with their cousins, the usual bedtime goes right out of the window - again, with AC approval (sleepovers are only occasional)!
At the end of the day we all want time spent at ours to be fun, not something they dread, but nothing’s done secretly, and if there were anything the AC didn’t want us to do, of course we’d stop.