I couldn't ride in my local Walmart if I tried. The people with shopping carts stroll around there like they own the place. They have no regard for people, other carts, kids, let alone a bicycle. Kind of funny. Today, I rode by. The road to Walmart was backed up about 1/4 mile. Then, the traffic mysteriously vanishes after you pass Walmart. Walmart is the fourth axis of evil.
However, they do have a bike rack. I am greatful for that.