I worked for them September-January as temp staff. When December rolls around I suggest taking up religion if you don't already have one, we had 3 deliveries/day & apparently people lose the ability to feel patience. Christmas shoppers be crazy mother****ers.
Except for that it's your standard retail job. You stock racks, answer people's inane questions, go on the till, etc. etc. Nothing special really, anything particular you want to know?