Wal-Mart blows. When I do go there for groceries, I buy in bulk to avoid having to go very often.
A very good friend of mine worked there for a semester, full time. He hated it. Always came home with a funny story about moronic customers (He's hella smart - a rarity amongst their employees). He said that there was a giant picture of Sam Walton in the break room wearing a "hi my name is Sam" nametag,a nd the nametag was clearly superimposed on the photo. He was unable to explain this to the other employees.
Other friends of mine that worked there were dating. The other cashiers couldn't believe they didn't have any children yet. "Girl, what you mean you ain't got kids yet? You've been together 3 years!"
I hate Kmart much much more than Wal-Mart. I love Target though. I can't WAIT until they open one here. Its got everything - Pottery Barn knockoffs for cheap AND Hello Kitty accessories!