Actually I read on this board from a good source who is a local, frequent, Disneyland visitor that it would not run past the end of September. If I was deadset on experiencing the 50th I wouldn't book a trip past Labor Day to be safe. You might try calling the Disneyland information number directly and ask them. Although I have been told incorrect and conflicting things from them before about ride closures, schedules etc. And all information is always subject to change without notice!
For the first time ever, the 10 Disney theme parks around the world will join together for a global celebration to mark the 50th anniversary of the Disneyland® Resort in Southern California.
The Happiest Celebration on Earth pays tribute to Walt Disneys dream of Disneyland, the original park that introduced an entirely new genre of family entertainment that now spans the globe and continues to offer the most visited attractions in the world, drawing 100 million visitors on three continents every year - - and still growing.
Beginning May 5, 2005 and extending for 18 months through 2006, the event will take place in all of the Disney theme parks around the world, with the premiere of exciting new shows and attractions at Disneyland® Resort in California, Walt Disney World® Resort in Florida, Tokyo Disney Resort in Japan and Disneyland® Resort Paris in France and the opening of Hong Kong Disneyland.