I don't know if they still have the sign up / policy still in place, but there is a place called "French Creek Outfitters" in Phoenixville, PA that disallowed any non-employee carry.
They have an indoor range there, and had my usual carry weapon with me, plus some others to shoot, and a Kel-Tec fold-up rifle (unloaded, of course). It is legal to carry an unloaded long gun in PA. I got yelled at because both the Kel-Tec wasn't covered, and I was open carrying. Both of which, I was told, was against store policy.
Also, when done shooting at that range, we were required to clear the weapon and show it to the rangemaster, which I did. Since this was my carry weapon, I then put a fresh magazine in, racked the slide, and holstered it (concealed). When I came out of the range area, I was told not to do that again.
That was the last time I was there.