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.
Night navex were banned about 4 years ago because a cadet fell over in the dark and hurt themselves. Around the same time as crab football was banned as having the potential to injure cadets.
IMO, it won't be long before drill is banned as well. It'll only take one cadet to faint on parade, injure themselves on the way down.