It's a Canadian film from the mid-1970s, starring Richard Dreyfuss (before Jaws), Randy Quaid, and Jack Warden. Mordechai Richler screenplay. In it, Dreyfuss makes a wedding film, it might give you some ideas about how to edit yours.
It's a semi-classic film that you "need to see" anyway.
Just remember to be respectful of their practices, regardless of your personal opinion/bias (if you even have one in that regards). Start with some inspiring music. It will, at least, give you some sense of pleasing pacing.