A few people have mentioned self-checkout. That is certainly my preference. My principle grocery lets us check out our own scanners so I can scan food as I shop and bag. Frankly I think we should be able to use the Express Lanes for that but those aren’t the rules so I don’t. I’m a one transaction customer when I check out.
I’ll often go forward and help people bag in the self-checkout lanes. Most people are surprised and try to thank me. I look at it as very self serving. grin Get everyone through faster!