I have six grandchildren and four of them have, to me, appropriate bed times. Two of them, though, go to bed at irregular times and are rarely asleep before 9.00 or later - sometimes much later. One of these GC is under 4 and goes to kindergarten, so has tiring days, the other is 7. I am concerned as I understand that enough sleep is as important as healthy food, and exercise, but don't see that there is anything I can do about it. I am not their parent and believe strongly in the boundaries which mean it is the parents who make the choices for their children. I have spoken about it to the parents, but can see it is a pattern which works for them and they are unlikely to change it. I don't see a way now to do anything which might help, and there is a risk of just creating irritation if I keep repeating my concerns. Do other Gransnetters have concerns about GC and sleep? And any advice for me?