Rachel and Michael booked me months before their New York City elopement; they were coming here from the UK and were excited to spend Christmas in New York. It was a magical day to get married. I met them at their hotel room at the Sheraton TriBeCa, and after they were dressed, they proposed we head up to the roof before heading to our ceremony site.
The officiant had traveled with me since (we are married to each other, so I didn't have to pay him to carry my camera equipment for me) and when the four of us got to the roof, I said, "Change of plans if you want, you two. You should get married right here."
I mean, look at that skyline. Plus, it was threatening rain, and I worried our travel time would only give the clouds more opportunity to start ruining Rachel's Drybar blowout. I assured them that no one would get in trouble with the hotel, and so, right then and there, they became husband and wife. We walked the streets a bit after, and just as we finished, so fat drops began to fall.
Photographers know best.