Since The Little Mermaid set up shop there, walking around backstage at the Lunt-Fontanne Theatre is a wonderfully strange, circus-like experience no matter what season it is. But now that the holiday season has reached a fever pitch, things have gotten downright wacky, with enormous snowmen rubbing elbows with wicked sea witches and mermaids knitting stockings and smooching princes under the mistletoe. Now you’ve got a backstage pass, too, thanks to cast members Trevor Braun and Brian D’Addario, who share the role of Flounder, and their chaperone John Mara. They took these pics of stars Sierra Boggess, Norm Lewis, Sherie Rene Scott and the rest of the cast especially for Broa