Personally, I’ve used a

Personally, I’ve used a wireless lapel mic on the groom, with the receiver mounted on and connected to one of my cameras. If the ceremony includes an arch over the bride and groom, I will *also* hide a shotgun mic in the arch, wired either to my Zoom H4n, or transmitting wirelessly to a camera. The transmitter I use on XLR mics is broadcast quality, and I always have it run a search for the cleanest channel to transmit on before each use.