We child mind our 2 GC for a 12 hour shift on one day each week. They also come as a family for Sunday dinner. Sleepovers are as required. They are aged 3 and 6 and sleepovers have their own routine. A treat plate and a movie and then bedtime which is much later than at home. Treat place is a biscuit, a marshmallow, strawberries and grapes. And some Nutella in an eggcup for 'dipping'.
What happens at Granny's... stays at Granny's. Mum and dad know this, know kiddies are up late, but also know that we also keep to discipline and boundaries.