And - perhaps in a bid to avoid Megxit round two - royal families from around the world have given their spares more and more to do - even though some of them are still teenagers.
King Felipe, Queen Letizia and Princess Sofia were there when the Princess of Asturias set off to gain experience with various branches of the Spanish armed forces
Infanta Sofia of Spain, 16, left her residence at Prince Pavilion near Zarzuela Palace to start school at the UWC Atlantic College in the Welsh county of Vale of Glamorgan.