Photographing a Wedding: Preparing for the Worst

Photographing a wedding seems the worst I could handle.  Most of the people are people I likely don't know.  If the daughters are anything like their mother, it could be very emotional.

How do you photograph the wedding of two people who already have four children?  Life has changed a great deal over time.  I remember my uncle saying "Are you playing 'So Happy Together'?" because my cousin and his fiancee had already been living together.

I bought a Joby (the Gorillapod people) Pro Sling Strap.  It's a brilliant, complicated strap that hooks into your tripod socket.  I probably should have bought the extra piece to allow it to be used more easily with a tripod.  It wasn't cheap, but it was discounted quite a lot, so it seemed a good choice from a reliable brand.

Other than that, I believe I need another (at least, one) SD Card that can record video and write photos at high speed.  I have two camera bodies (Panasonic GH4. GM5), both of which do HD video.  I could record 4K video but that's a bit much.  No one wants to see their flaws that much.

I was thinking about using the small camera behind the altar or whatever home-made setup they're using, to record the bride's walk down the aisle.  I can have someone start and stop it remotely, using a phone--if they remember.

Otherwise, I've got a slightly wide (15mm f/1.7) angle lens, plus zoom (12-35mm f/2.8) lens for the wedding party shots and reception shots.  I've got a portrait length (42.5mm f/1.7) lens for closer shots, plus a zoom (35-100mm f/2.8) lens for the vows.  I've also got a fisheye Olympus 8mm f/1.8) lens that works in lower light situations, if things get weird.

I need to figure out something neutral to wear since I don't have many clothes these days.

Update 2018.09.08: Got the strap, an SD Card (SanDisk Extreme, up to 90 MB/sec), a light gray, short-sleeved shirt, and I've ordered another GH4 battery.  I'm still feeling more than a bit of anxiety but whatever.