I'm curious to hear what you learn as well. The "Gabes" here in York (PA) has had no problem with it, and we are in there all the time. To be fair, we have not had any conversations with any employees or managers, so I can't say anything regarding corporate policy.
Let us know what you find out!
P.S: You probably already know this, but it looks like you handled this situation as well as anyone could.