Read my post - my statements are based on the assumption that he knew he wasn't playing (i.e. he was suspended before he went to the bar.) And if he knew he wasn't playing and is of age - what is the big f'in deal? Besides - just what are the team rules about going to the bar of age on a Friday night? I wouldn't know because I'm not on the team.
If he knew he wasn't playing and did not get to go with the team to the hotel, then no harm no foul. But if he was suspended on Saturday morning because he left the hotel to go to the bar, well, that's different. It all comes down to when he was suspended.