[Deo volente]

No, by Members Only Guy, it clearly showed him earlier going into the restroom, where he’d have a clear shot at Tony when he came out.

The gun was probably stashed there and he shot him when he came out.

[discostu]

I always thought it was Members Only, but it was just a target of opportunity. Some guy who hated Tony, or maybe worked for New York and hadn’t heard the war was over. He went by to double check that it really was Tony. And probably just hung out in the alcove by the bathrooms until he got psyched/ had a good moment.