I agree with what Bill had to say as well. As a professional photographer, I did numerous weddings, Bar Mitvahs and corporate work for many years. I least liked weddings, especially with film. As pointed out in another post, there is more to being a wedding photographer than running around on the day of with a camera. It is the most stressful kind of work you can do short of being a war photographer!
Anyway, I was one of the rare ones who shot with Leica rangefinders. Two M6 TTLs and an M6. My favorite lens was the 28-35-50 Tri-Elmar. Very versatile. Always rotate the camera in use so in case something happens to the film, shutter, misload you have something. Zeiss lenses are outstanding. When I went digital, it made life so much easier and less stressful. I started with a Nikon D300 and then a D700. Great cameras and flash system, which Leica cannot touch.
I recently shot some of my son's wedding a few weeks ago with the SL which I had on loan from Leica and my Monochrom. Got really excellent results, with about 900 images for the weekend, edited down to about 300. My professional shot over 1700 images with his EOS 1 and fill flash, etc. and edited down to around 1000 images. He got the meat and potato pictures plus some great creative ones, I got ones that meant a lot to me personally. I was happy with the results, as was my wife, who of course is the one with my son and his wife to make happy.
Back in my film days of event photography, I would only shoot about 400 images total, and I owned my own commercial lab, so that cost was not an issue.
Anyway, I say go for it, but know what you're getting into!
