If I'm not mistaken, one cannot carry a weapon in a bar unless he's authorized by law or specific license (such as private detective). And "CUI's" (carrying while intoxicated) will generally cost you your gun license as well. So even though Toby Keith's "I love this bar" is technically a restaurant-bar, he's just being safe. I am very sure, though, that the manager may have access to a firearm when needed.