Fireworks fill the sky and doves are released during the finale at Disneyland’s 50th anniversary celebration ceremony at the Disneyland theme park as “The Happiest Homecoming on Earth” begins in Anaheim, California in this May 5, 2005 file photo. Walt Disney Co unveiled new single-day ticket prices on February 27, 2016 for the company’s U.S. theme parks, switching to a three-tiered system that charges visitors more on the year’s busiest days and less during typically slower periods. REUTERS/Fred Prouser/Files