I used to deliver California produce to Roundy's in Point and Oconomowoc. I noticed that there were no No Firearm signs anywhere to be seen coming in past the guard shack. I asked the outside sourced guard about it, whom I got to know somewhat after a while. He was into guns. Said he never saw one come in open carry. This is at the Distribution Center, not the store. I never tried for fear of having trucking company maybe banned from the premises or such. After four years there were a couple of people there I wouldn't cry about if they got shot. Having said that I wouldn't buy groceries from a Roundys company if it meant starving to death.
