Relax, keep your pistol well concealed and carry it.
If you just continue going on with your daily business there or anywhere else 99% of the general public will never even give you a second look. T.P.
+1 I carry in my wife's work on the rare occasion I stop in for a visit and they do have the "gunbuster" sign. This place is not in the best end of town. I just keep it well hid and if somebody did find out, I'm not going to stop protecting my wife or my own life just because I am on their property.