New York is a Christmas town – we’ve all seen the films. Here are the must-dos: ice-skating in Central Park; taking in the dazzling Christmas Tree at the Rockefeller Center, watching a performance of The Nutcracker at the New York City Ballet; and seeing the window displays at Saks Fifth Avenue (this year inspired by Frozen 2) and Cartier’s Fifth Avenue mansion, wrapped in a giant red bow. Cue the snow.