If I were going to do wedding video, I would get three identical cameras and dedicated mics on each one.
I’d have a stand alone digital audio recorder as well.
Without a crew, one camera would be a wide safety locked down. The others I’d would preferably put on remote control mounts.
It can get pricey and maybe overkill but I like to get things as right as I can. I’ve heard enough bridezilla and mother of bridezilla stories.
A lot of hardware to manage. Expensive is correct. And some churches (pastors and priests) don’t like cameras. Some don’t allow cameras at all. And then fighting with the wedding party and families.
The ROI might be difficult and the hassle not worth it.