Comment by BobaFloutist

The biggest thing I've noticed is a Costco chirality. My home Costco was right-handed (enter on the right, things are in the same order you described, exit on the left), but then I moved and now my local Costco is left-handed (pretty much the same but mirrored, except, for whatever reason, the alcohol, which precedes the perishables rather than succeeding them). Kinda funny.