A jailing at RMAS isn’t really anything more than a couple of hours humiliation, the colour party got jailed on a rehearsal for sovereigns parade when I was there.
Backterming was the big threat, and that was for what we considered to be relatively minor stuff (it also meant we had the fear of god put into us early on). Although 50 at once would probably overwhelm the system.
Are they all still off for Christmas leave?
That'll learn 'em.