The royal wedding could provide a shot in the arm of more than £80m for the country’s slowing economy as retailers, pubs and hoteliers look to cash in on Harry and Meghan’s looming nuptials. VisitBritain said about 50,000 Americans were expected to be among the crowds lining the roads in Windsor and soaking up the atmosphere in the capital when Prince Harry and Meghan Markle tie the knot later this month. Pubs have been given special permission to stay open late while retailers in London’s shopping district are anticipating a £60m mini sales boom on the back of tourist spending sprees. “There could be a modest boost to GDP growth in the second quarter from the royal wedding and the football World Cup starting in mid-June,” said Howard Archer, chief economic advisor to economic forecasting group the EY Item Club. “There may well be a temporary boost to retail sales from people buying souvenirs and also to tourism.” Airbnb said that with around 42,000 guest arrivals expected in London, hosts were set to rake in £12m from renting out their properties. In Windsor residents can earn £353 from the wedding weekend alone by using the platform to let their properties….