I dont either, probably 1 order a week or so. It is pretty easy to do, just have all the images ready on desktop, you import everything in and select PRO service so no editing is done. Depends on your connection speed but can take an hour or 2 to upload if lots of images, then simply pay. Get your order in before 12 and its normally with you next day. Worst case I have had is the day after and quality is good, service too on the odd occasion when a print turned up bent. Cant knock pricing either, been using for over a year now.
I also got same images printed at tesco, great way to show customers the quality difference.