I have never understood why whole families or groups of adults have to stand in line together, when only one person is paying for the transaction.
(I'm not talking about parents who need to keep little kids with them, for obvious reasons.) But a family of 5 grown adults. And they aren't even talking to each other. I can understand if one person is relaying info to the whole family or group in line. But they are often just standing in line, in single file, or two by two. Then they get up to the cashier, and only one person is doing the whole transaction, while they then stand next to the person or off to the side.
I'm not talking about Costco, which has the real estate and factors in long lines that go a quarter mile back and take 20 minutes to get to the front of the line. The majority of the stores these people do this in are are small grocery stores or drug stores. We even have the rope stanchions in places, where the line of people snake through, to maximize the space to try to fit as many customers in as possible, and these people take up a sizable amount of the line.
It makes it hard to figure out which line is the shorter one in grocery stores. And they are taking up space in the snaked lines and it's hard to figure out how long it will actually take to go through the line.
I really wouldn't mind seeing this custom done away with, along with shaking hands. Only the person paying should be in line. Everyone else wait by the door, or at the opposite side of the cashier.