well, it's a fair question: what can he do? It now seems that royals are not allowed to do anything that risks their lives or those of others round them. It doesn't seem reasonable to expect him to sweep streets where republicans could throw stones at him. He probably hasn't get any training for anything else - he seemed to be aiming for a military career, and might for all I know have been good at it. So it's probably a life of idle luxury coming his way, though that may not be his choice at all.