Sky sports,
I'd agree with your comment about the organisation being risk averse. We had a large town common within yards of our unit HQ and for years used it for night exercises. This all came to an end, as we had nobody qualified as a mountain leader (or other such phrase, sorry the grey cells grow old,) Thus, no nightex. Very sad as the cadets used to love them, all carried out in perfect safety.
I never found out who decided on this - just 'higher authority'.
As for adult uniformed staff, I'll agree that one or two did join for the glamour of wearing the uniform. In my limited experience, the majority were in it to help the cadets florish.