Sorry about misunderstanding - its Mnoday here too!
If I understand correctly, you're concerned about wt bal issues as couples exit the ceremony under changing lighting conditions?
Same issue, same/similar solution. (If I've got it right this time)
Whenever possible, right after ring ceremony (or Sand / Unity Candle, if there is one), one of us will (as discretely as possible) go down a side aisle (or better yet, often we can slip through a back doorway, and go around the sanctuary on the outside) to take up a position near the exit door.
Behind the last pew is usually good. That way, we're out of their way but still get the good shots. No panning necessary, just set up a bit of a diagonal (usually looks a bit nicer than straight at you) and hold on the parties coming toward the camera. The main issue is to not have the windows in the frame.
Whatever you do, you can't be shooting with a bright window in your frame. In my experience, automatic exposure/wt bal works pretty well in the VX2100s if you don't have too much contrast and if you have some white in the picture - at least at the begining of the shot.
White walls, large dark stained windows, etc. can throw off your exposure average and force you to go to manual. I always check these things out at the rehearsal, then double-check before the ceremony. Jean and I usually either synchronize our cameras to the same f-stop (but generally leave wt bal to auto unless there are issues) or we both stay on auto exposure if we don't have changing lighting conditions or contrasty backgrounds.
If something unexpectantly changes during the ceremony (like they turn on lights you'd never seen before even though you thoroughly asked about this sort of thing before) we'll signal each other through our headsets and go to the same f-stop.
When we have wt bal issues, rather than risk having different settings, I'll usually set both C1 & C2 to incandescent or daylight, so they'll be the same, then both will take the same sort of nudge in post - but at least they'll look the same.
Being a little off on white balance isn't too bad, but having each camera with a different color temp is going to get noticed.
RAM, if you end up with part of your clip needing color correction, (and usually this is one huge "ceremony" clip), I'll cut the section out, using the razor tool. Then I just correct that part of the clip I've isolated. I've found this works better than trying to use auto-color on a big clip.
Hey, if I still didn't get the topic right, try me on Twosday! :)