They can open if they have more than 280 sq ft. Our co-op does it, they just close off some of the isles so you can only purchase items from an area smaller than 280 sq ft.
I bet you can't guess which isles they close and witch they leave open.
Oh the memories of such fabulous customer service.
Used to be that you could buy one of Dirty Des's porno mags on the Sabath but not the Bible (and I guess the Koran). Does this legislation still apply?