As of today, in Arizona you can legally carry a concealed weapon into a bar or a restaurant that serves alcohol....unless the bar has a state-approved no-guns sign, the sign hasn't fallen down, and the notice wasn't first posted less than a month earlier. And none of the sign rules apply if you're not an Arizona resident.
But not to worry! As an NRA official points out that "if a person starts drinking and gets in a shootout and kills someone, of course they're subject to criminal prosecution."
Still, the only place I've ever seen a store called (or even resembling) Don's Liquor & Guns was in California. So that's something.