Wimbledon and the French Open are the only Grand Slam tournaments where fans without tickets for play can queue up and still get seats on the three show courts on the day of the match. Sequentially numbered queue cards were introduced in 2003. From 2008, there is a single queue, allotted about 500 seats for each court. When they join the queue, fans are handed queue cards. Anyone who then wishes to leave the queue temporarily, even if in possession of a queue card, must agree their position with the others nearby in the queue and/or a steward.