If Walmart would take the employees they would need to deliver food, and simply put them on the checkout registers, it would significantly reduce one of the reasons I rarely visit their store - long checkout lines despite an abundance of empty, unmanned checkout stations.
I don't have that problem. I just head for the self-checkout section. They work a lot better than the ones at Kroger or Albertsons, and they've even added the scanner guns so you don't have to put large items on the tracking table. You do have to get approval to buy alcohol, and you can check your appearance in the small color monitor that's linked to one of the cameras.
Or order online, and have them bring it to your car.
I think time of day and day of the week have a large
influence on length of check out lines.