Round up of Big Lunch Celebration across the UK. Including Big Lunches in Downing st, Windsor, Surrey, and Blackpool. The Prince and Princess of Wales sipped homemade cocktails with royal fans as they soaked up the atmosphere in Windsor ahead of Sunday’s star-studded coronation concert. William and Kate surprised well-wishers when they went on a 40-minute walkabout in the town’s famous Long Walk, and also came across special coronation ale dedicated to the King.