If you had 2 sensible 11 year old friends (Y6 right now) would you think it reasonable to take them to cinema, send them in and wait in café/mooch round the shops in the shopping centre and have them meet you outside the cinema at film end?
They both have a brick phone. But I can't imagine they would actually need to use it.
My brother seems to think they're too young? I think it's fine. I'm just wondering if I expect too much of them? But I'm sure I was being dropped off at places like the swimming pool at that age!