There is no Braum's in east Texas, as the stores are only found within a 350-mile radius of Oklahoma City.
When June and Connie are driving to the casino, the column-mounted gear shift is clearly in the "Park" position.
The cans of Dr Pepper in the Coopers' refrigerator have "Nutrition Facts" labels. The nutritional data on American products were labeled "Nutritional Information" until 1994, and this episode is set in 1991.