2) A couple of high quality directional microphones are a perfect solution for many sound recording needs at a wedding. Placing it onto of your camera will automatically increase the quality of your sound over an internal camera microphone. If you buy a shotgun microphone with a built in battery or an option to insert a battery, you can also easy send the signal wirelessly to your camera or computer, enabling you to place it nearer the action whilst you are out of the way filming.
We use the Rode NTG4+, its sound recording pattern is super cardioid, which means it will record in the direction its pointing with minimal sound picked up from the sides or behind.