I have an idea...how about put in an express lane like what every other grocery store in the world has? If you are going to put only 3 people on cash at peak times then the least you could do is have an express lane for those of us who are only buying a few things.
I am giving 2 stars instead of just 1 because they did a bit of renovation recently and also it's cheap which is nice. But it seems that the renovation is finished and they are just leaving a bunch of exposed particle board showing everywhere, and THERE'S NO EXPRESS LANE!