What smartest customers always do to avoid endless queues in supermarkets

We don't always have a lot of time to do our shopping. Unfortunately, the long queues at the caisse can sometimes delay us, and the experience at the supermarket quickly becomes rather frustrating. Here, according to an article from the Spanish website OkDiario, the tricks some customers have found to avoid too long queues. How to choose your queue at the supermarket? You just did your shopping and arrived at the time to choose a queue from the …