Sorry that this isn't a question as a first response for the topic, but I went to WalMart several times when on holiday in Florida last year. Something actually surprised me over those two weeks, but in a pleasant way, in that the staff in WalMart (and people in general) seemed much friendlier and nicer than people here in the UK. I'm not sure if it's just a local trait of people in Kissimmee (possible), or if it's a general thing in the US, since I've heard about plenty of arrogant bastards in the US of A and was therefore generally pleased to meet such decent people during my time in the country. Especially given this occured a lot in WalMart, whereas British shop staff are generally irritating or idiotic (especially in Asda, which is coincidentally owned by WalMart).
By the way, I toyed with the idea of buying a DVD in WalMart but wasn't sure if it would work on a PAL DVD player or Xbox 360 back in the UK.