A would-be Wimbledon spectator waits in "The Queue." Chiara Luxardo for BI When I arrived at Wimbledon's All England Club on Friday, men's semi-final day, security guards and ball boys were arriving for work before the ground opened to the public at 10 a.m. It was at 8.20 a.m., and Wimbledon Park opposite, thousands of would-be spectators stood in a line that appeared to stretch for at least a mile. Some had been there for hours, others for days. They hoped to secure one of several thousand £21