To celebrate the 15th anniversary of Walt Disney World in 1986 and 1987, each guest would get a ticket when they entered which could award a prize. Every 15 seconds, a 12-foot-high Mickey Mouse alarm clock at the entrance to the Magic Kingdom and a giant flashing clock at Epcot Center announced birthday prize winners.

To celebrate the 15th anniversary of Walt Disney World in 1986 and 1987, each guest would get a ticket when they entered which could award a prize. Every 15 seconds, a 12-foot-high Mickey Mouse alarm clock at the entrance to the Magic Kingdom and a giant flashing clock at Epcot Center announced birthday prize winners.