Yes. (Especially if there is a merchandise person in the lobby.) However, you are less worrisome if you do it at the end so then the staff doesn't have to worry about whether you are trying to sneak in.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.