I applied in-person. The process took 1 day. I interviewed at Walmart (Madison, WI) in Jun 2012
Interview
you sit in a room with a member of management and they ask you one question. Then they go over what your availability would be. If they think you will work out they might send you for a drug test the same day.
Interview questions [1]
Question 1
tell me about a time when you provided great customer service?