A little common courtesy

If a store is closing for the day, quickly finish your shopping and be on your merry way. DO NOT hang around for the next half hour! After closing is not your personal shopping time. People who work in retail have lives too. They are not your servants. Next time you are in a store that is about to close, just think how you would feel if someone dropped a pile of work on your desk at 4:50pm and you couldn't leave until it was finished.