Children's meals -how old is too old?

[popmimiboo]

Obviously depends on the child, but when do you think it becomes unreasonable to order a children's meal in a restaurant?
(I live abroad and not many places do children's menus as such so I was just wondering!)

Mine are 11 and 13. 11 yo still uses it occasionally. Often they have an adult starter followed by a child's main course - right amount of food for them and means we can all eat the same course at the same time