My major point in my larger post was the fact that outside of the gym and competitions and such, a coach is NOT a position of authority in my life. I respect all coaches as a position of authority when I am in the gym, or at an event, and if I coached (the kids I coached in gym were far too young to be drinking at a meet or event) I would expect the same, but IN MY OPINION (which, no, is not wrong, it's an opinion) is that what I do when I'm not directly associated with the gym (as I said, practices, public events, competitions, whatever they may be) is not the business of coaches. Parents, police, etc. that's another issue, but coaches are not a figure of authority in my world when I'm not under their care.
ETA: that should not be confused with not respecting a coach, I would listen to what they have to say about things I am doing, but suggestions and orders are 2 different things, and I would not take an ORDER from a coach if I'm not at an event.