It's a common tactic, used before, and confirmed by Muslims sympathetic to the West, to have a "wedding couple complete with marriage license" to trot out in the event the "ceremony" gets raided. In this case, bombed.
Mistakes get made. It's war. The History Channel - Military Blunders in History reflects that. But we generally admit it when we've made a mistake.
There isn't one shred of evidence I've seen to date that makes me think this was a "real" wedding.
I just googled "Afghanistan wedding bombed" and found that we were accused of bombing 3 wedding parties in Afghanistan!...Gee, the military sure does have something against marriage...;)...or this is a common ruse by the bad guys.
Muslims did worse things in Bosnia and Kosovo.
Gee, I used the magic words. OK, Ronly Bonly Osama come here. Srebrenica, Srebrenica, Srebrenica.