Holiday and sales customers are often unfamiliar with the products, cranky and unwilling to be helped - have lots of patience. Depending on your manager and their need to make a segment you may feel like a pushy car salesman trying to close a deal. There is no sitting during a shift so expect your feet, legs and back to ache as you adjust to being on your feet at work or if you have a long shift. Also bring snacks or easy meals that you can eat quickly since most shifts only include one 15 minute break (30 if you work more than 6 hours). Also know that you may be scheduled for on-call shifts. These shifts require you to call in 2 hours beforehand to see if you will need to work. There is no way to request no on-calls. Pro: you can make extra money on a pick up shift. Con: you cannot make other plans for the day until you call in.