In the MOC seminar that I went to this came up and it was pointed out by the presenter that chain stores, like Wal-Mart, Meijer, Speedway, etc. have a liquor license that covers all stores in the state.
So even if your Wal-Mart did not sell alcoholic beverages, it would still fall under the corporate liquor license.
That is how it was presented in my recollection.