There was a post or two and discussion about this a week or so ago, but I can't find it now. I remember being very interested in it, since we're scheduled to be there during that time. Anyway, they had a link to a blog written about the experience in 2009 (when the blogger actually wanted to witness the taping). The woman went for 3 days straight, and was told wrong information about what was happening when each day by various CMs. My guess is that even if they leaked a schedule, they wouldn't follow it. People say the parade itself clogs up Main Street, but the rest of the park is unaffected. They recommend taking the train around the park if you need to get to the exit from one of the lands (which won't work for us, since DH uses an ECV and the Main Street station is not H/A).