I applied through college or university. The process took 3 weeks. I interviewed at Walmart (Bentonville, AR) in Nov 2012
Interview
The first interview was conducted on campus. It consisted of a straightforward case question (much easier than consulting) that presented a retail-oriented situation, and required lots of "retail math". They then asked lots of behavioral questions. Once on site, there was also a presentation to do in front of a panel of VPs.