Frodo, Walmart is our main place for shopping too. It's the only one that is open after 9pm-- most stores here close around 5pm. It has a sign that says "Open 24 Hours" and then next to it is a sign about being open from 6am to 12am. :P
About once a month we go to the the "big city" an hour away to shop at Sam's Club and stock up on frozen boneless skinless chicken thighs.
Chris, that does sound like a pain. I wonder what the percolation rate of the soil is in your area.