Not a wedding shooter my self but what the heck. I would name your cut clips to let say "car entering" , "i do's" "best mans speech". basically all the important stuff. But things like the "boring" bits of the service if you feel no need to then I wouldn't think it matters (you can of course come back to it). I would then work in "bins" so have one bin for video one for text ,one for audio ( music voice overs ect....) and one for photos if you're using them.