Random... but did you have any uninvited wedding guests?
I had a cousin bring a "plus one" (cross country!) that wasn't invited (I have 27 cousins, so it adds up).
Some friends of the family brought all of their teenage kids, whereas only one (my friend) was invited.
In retrospect, I should have invited these people I guess... I was young and trying to stick to a limited budget ($8000 for 140 guests.... yeah.)