Marc, I think your use of the moving camera was very well done, and very steady, and I too like the viewpoint of an unseen onlooker. I do think it can be overdone though, there are times you need to hold still.
At the start I found the shot of the church name board a bit hard to watch, I liked the journey under the trees, but I think you could have ended it a fraction sooner and done a simple dissolve to the church, rather than a fade to black.
I liked the pan up the groom and friends, but as with the lectern later on, once you get to the subject you need to hold still for a bit, not move on.
Rather than follow the same action with fades between, perhaps cutting back and forth between the groom etc, the interior of the church, lighting of candles etc and the bride, would have avoided some of those fades to black and you could have used sraight cuts instead?
I loved the 'walk' around the bride while she was having her veil adjusted.
I don't know whether you had time to get any, but just as a general tip for anyone, cutaway shots of the congregation, taken say while they reassmble the B&G etc at the register table, also help to avoid the use of fades and dissolves between changes of camera angle.
The 'you may kiss the bride' shot was fantastic, but you need to cut it before the camera moves away.
I seem to have gone on a bit, sorry

And I know from past comments that you like transitions, whereas I avoid them unless they are really essential
Gillian