...Here’s the dilemma: Emn, and her college sweetheart, Alex Bero, are holding their ceremony at the Clermont Historic Site-- an 18th century landmark in Germantown, about 5 minutes from Rhinebeck. Then the guests will head south, about 20 minutes, to the reception hall at the Dinsmore in Staatsburg. The hitch is that Astor Court is smack dab in between the two locations. The Belvedere Mansion, another scouted estate where several high-profile guests are said to be staying, is in the same town as the Dinsmore. “If Chelsea’s wedding does happen, they’ll probably close all the roads and my guests will...