Peggy grabbed the bag of potato chips, that was beside her, and put them in the cart. When Al tells her to read the ingredients of the potato chips, it is beside her again.
During the opening scene when the Bundys are outside and complaining to Al about the 100°F heat, a thermometer can been scene behind them on the house and shows an approximate temperature of only 70°F, which may had been the actual studio temperature when they filmed the scene.
There's a sign on the grocery store wall that says "Frozen Foods", but that section only contains refrigerated beer and soft drinks.
The "shotgun" Peg uses to deflate Al's kiddie pool is a BB rifle.
The words Property of Erwin Rommel on the air conditioner should be in German, not English.