Interesting question from a client, eh?
M-Th I do my accounting, think of new marketing ideas, create albums, fulfill print orders, meet with new potential clients, book some new clients which then creates a whole new stream of work to get their files and paperwork all in place, talk to clients and vendors about whatever issues are going on, answer alot of email inquiries about my services, do some portrait shoots, process weddings I’ve already shot, process portraits I’ve shot, write stuff on my blog, create slideshow presentations for my clients, experiement with new processing techniques, make appointments for portrait sessions reviews with clients, get stuff framed, matted, and delivered, play with my cameras and flashes working on new techniques or ways of using light and shadows, read books on business, marketing, or photography stuff, look at websites of photographers I admire and see what they are up to right now, look at the blogs of all my photographer friends, hook up with my clients on facebook or myspace, read this forum, as well as a couple others to keep informed and educated about the latest goings on, constantly think of better ways to do things, back up, and back up, and back up all my images on all my hard drives constantly, and probably a bunch of other activities I’m forgetting. On Friday, I relax and usually charge up all my batteries, do a little email, and get ready for Saturday.
I spend about 40 hours per client per wedding, and about 3 to 4 hours per client per portrait session. So, it’s not just the 8 hours I’m at the wedding, there’s tons more behind the scenes.
…and I didn’t even add in things about reworking the website all the time, helping new photographers, revamping pricing methods, offering new products or at least constantly looking at new products to offer, burning client DVD’s, revamping the marketing materials, hiring a brand manager to do a business assessment and help with marketing and branding, making a market, rather than being in a market, paying bills, constantly updating my insurance to make sure all the new equipment I buy is covered, and a whole slew of things.
We work very hard. We just make it look simple. 
In fact, we make it looks so easy and effortless, EVERYONE wants to be a photographer. Now, that’s cool! 