In the past, Harkin's never had any signs on the doors regarding guns. Although, I did hear a rumor once that they had a sign up at the Harkins 25 at Superstition Springs Mall that said "No Guns, except concealed per HR...." I never could substantiate that rumor, not even with their managment staff.
Regardless, they now have very small (gotta squint to see them) no firearms or knives stickers on the doors, which seemed to go up a few weeks after the Aurora Theater shooting.
Sooo a few months after the stickers went up, the wife and I are in there one evening (concealed yes), and I see three Maricopa County Sheriff officers in uniform in the lobby. So I walk up and pull one guy to the side and said "Look, I have heard Dan Harkin on KFYI radio before, and he seems like a pretty Conservative guy and all, and these "No gun signs" are new, so what's the beef. Plus you guys are in here as well." The officer in a rather hushed voice said "Look, the word we got is that if we don't see it, we don't worry about it. That's what we have been told".
So on that note, I do what I have to do to ensure that me and the wife are protected in public. And as for Harkins -- I still go by what the Sheriff officer told me.