Will say it again, it's private property. IF they wanted to have a policy requiring open carriers show their CPL on request it would be lawful(though not ideal). A LEO stopping OCers to see if they a license is not lawful. Private property owners do not need RAS or PC to request a CPL. Now because it is only a request, not a requirement you do not have to provide it and can just leave your basket of groceries and go shop somewhere else. But I will say this, is it really that bad to show the CPL and continue shopping, letting all the other customers see OC is permitted by the store? Versus them seeing you having a debate about showing your CPL then leaving the store with no groceries? Which scenario shows OC in the better light? It's food for thought.