Thoughts on doing your own videography?

I have seen this done at a few weddings actually. But never thought about it enough to ask them afterwards how it all went.

It sounds like a fun idea, but I do wonder if you might have the same issues that used to arise with those disposable cameras that were such a feature of weddings 20 years ago - namely, the camera being hijacked by the silliest/most drunk guest, leaving you with a load of blurry footage and a lot of annoyed guests who have got fed up with being hassled by the camera-operator! So it might be worth thinking about your guest list and how they are likely to respond to the idea. (And maybe confiscate it after a couple of hours, while everyone is still relatively sober!!!)