yeah... it's a place that's more for people who already know what they want. Go in, order, purchase, leave. Occasionally you will find very patient sales who will be more elaborate if asked any questions, but I find it to be quite rare.
I've never been in the warehouse/storage area of the stores, but it does seem to take an abnormally long time for them to get the items. But then again, there could be thousands of items all just stacked up in boxes at the back