Working at Wally World does not exactly require one to be the sharpest hammer on the tree. 
Matter of fact, if you're under the age of 70 and even slightly sharper than a bowling ball, Wally World should not be atop your list of employment opportunities. That being said, if they're ALL that is available to you, go for it.
Hell, just playing WalMart Bingo on a daily basis might take some of the sting out of the fact you actually work there.