The Celebrate Street Party is being brought out of mothballs just for the occasion, followed closely by the rolling High School Musical Stage, and then a two-hour Miley Cyrus concert will take place in the Hub and be simulcast all over the DLR and into every hotel room, even the non-Disney ones.
"The old man's gonna knock on the sky. Listen to the sound."
I recall in some past years, they would hand out buttons with the anniversary year. I have a couple in my Disneyland treasure chest, especially one from the 25th Anniversary. I'll not be at Disneyland today though, so enjoy the day.