I highly doubt this, you may want to make a visit yourself. Assuming you mean open carry, do the staff visually check each person for a gun before allowing entry? What if the person is LEO? What is not LEO but want to leave? And who is going to unholster and place their gun in a drawer - secured, unsecured, attended or not?
I'd saw lawfully carrying a weapon into a place of business, and then being refused to exit without removing a lawfully carried sidearm = big $$$ in a lawsuit.