This. The closest grocery store to me opens at 6:00am and only the self-checkout machines are available. The manned registers don't open until 7:00am or sometimes later. The self-checkout is not designed for a cart or even a week's worth of groceries. The only way to do it, is to continually have the clerk come over and override the system, as you put a bag on the floor or back in the cart.

Upon moving here, I endured this twice, before switching stores. I still use this one on occasion; but, only if I can put everything in a hand basket.