I haven't stayed overnight at a Cracker Barrel, yet. But one think that irks me no end about Cracker Barrels in general, when I try to park my Interstate with toad in one of the four or five RV spaces out back, there are always at least two of the spaces occupied by a compact car or an SUV that's not towing anything. In some cases, I've had to continue on to somewhere else just for lack of someplace to park. I wish the non-RVing patrons would be more considerate of the RVing folks who can't fit in a regular spot with their rigs.
Engineering: Finding complex solutions to simple problems you didn't even know you had.