Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Sound › Best mic for capturing wedding audio? › Robgrauert pointed you in
Robgrauert pointed you in the right direction. You’ll be able to pick up the sound easiest if you can have a mic real close. A wireless lav should be ideal for this. Look for a UHF one instead of VHF.
You might also want to consider another mic for on-camera when recording the reception, etc.