The most challenging part about photographing a wedding can be the ceremony. If it's outside it is less difficult as I have room to move around. In a church you are very limited to where you can stand and move, not to mention they are poorly lit. But that's how it goes and it's part of the job.
Whatever the case the ceremony for a photographer involves a lot of darting in and out, being careful not to block peoples views and not to be in the way. The importance of making yourself nearly invisible cannot be overemphasized.
It’s your first kiss as Mr & Mrs and your officiant is photo-bombing you. Unfortunately it happens all the time, it’s the nature of the set up. To avoid this you can have your officiant step off to the side quickly so you can have your photographer(s) shoot your “kiss”, without your officiants head right between yours. Or, ask the officiant to perform the ceremony beside you, not in-between you. The examples below are photos that I wish the officiant had moved. Yes, I can photoshop them out and I often do - but still.
Where the officiant DID move for the first kiss.
Or do what we did have the officiant perform the ceremony on the side, we are not very traditional nor religious so it worked great for us. Look how amazing the second shot is - the photographer would of never got that had our officiant been between us! I use photos of my own wedding as an examples as I have never shot a wedding where the officiant stood off to the side and don't think couples are thinking about the photography every step of the way like I would of course. It's in my blood, I can't help it.