The self checkout stations are open 24x7, while there's typically one a few human cashiers on duty while most of the staffed stations empty (even during peak af

The self checkout stations are open 24x7, while there's typically one a few human cashiers on duty while most of the staffed stations empty (even during peak after-work shopping times, I've seen unstaffed checkout lines, I guess the store doesn't want to pay to stay them all for a 90 minute peak). But self-checkout lines are always open.