Disregarding the express checkout option
There’s a reason grocery stores have implemented the “10 items or fewer” overhead. To reduce waiting time at the checkout for customers who’ve only bought a few items, and to improve customer flow in general.
If you blatantly disregard this rule (yes, it’s a rule, not a recommendation), you’re just being rude and forcing others to spend more time inside the store than they would like to, especially amid the coronavirus pandemic. Making them wait in line with one or two items while you unload your months’ worth of groceries is a major faux-pas. They have every right to use the express lane while you have every reason to be reprimanded for your disrespectful behavior.
