Don your poshest fascinator for an epic celebration of the royal nuptials, sponsored by the Dumbo Improvement District and Big Apple Brits. The party starts before dawn with a free live screening of BBC America’s feed in the archway under the Manhattan Bridge (Adams and Water Sts). Afterward, join your fellow Anglophiles at the Dumbo Loft, where you can snack on wedding cake and groove to British tunes.