> 2) They've obviously carefully tuned their check out staffing so that the lines are always long. This is such a constant that it has to be intentional, and they're doing a good job of it.

They're also the only store I know of that shuts down their checkouts at closing time; if you were already in line, too bad, they'll check you out tomorrow. (Of course, a lot of their stores are 24x7)