LONDON -- During a long weekend of royal pageantry devoted to Queen Elizabeth II’s 70 years on the throne, the British people will take center stage in at least one event.More than 10,000 performers, including schoolchildren, community groups and military bands, are expecting to troop to Buckingham Palace on June 5 to cap four days of celebrations marking the queen's Platinum Jubilee.The event on the Mall, the tree-lined road that leads to the palace, will feature pop star Ed Sheeran, dancers, acrobats, vintage cars and depictions of the queen’s favorite corgis and horses in performances highlighting the changes in British society during Elizabeth's long reign.“It will be all about how, through the recollections and stories and experiences we share, we can see how we are all connected through time to each other, and to the queen,” the show’s director, David Zolkwer, said Tuesday.Elizabeth, the longest-ruling monarch in British history, assumed the throne when she was 25 years old. In the next seven decades, the U.K.