Parade is a bit strong a word for what we do - stand in an open square in the truck bay for roll-call, announcements, plans, issues, etc. Gives officers a chance to eyeball whether PPE is clean or has maintenance items. We certainly don't do drill, & anything heavier than this - debriefs etc - get's adjourned to the training room.
For a long time, we didn't even do this much of a parade. Just started from the training room.
Has it made any difference?
Probably people are more conscious of cleaning their PPE. But that'd be about it.
Cadets is different. We get them to do the whole fall-in, right-dress, klicken heels und stompfen feet. The orderliness of it helps them to pay attention.