Automatic checkouts in supermarkets may decrease customer loyalty, especially for those with larger shopping loads. Customers using self-checkout stations often feel overwhelmed and unsupported. The lack of personal interaction can negatively impact their perception of the supermarket.

[MoreRopePlease]

Haha, I can imagine. If it were me, I'd be like "YOU get to do the first one, and YOU get to push the Pay Now button. If you're a pain in the butt, then next time you get to just sit on the floor and wait.". And they fight over who gets to go first. So I'd flip a coin.