In a post on the Disney Parks Blog, they mention the entertainment happening during the 24 hour party. At the end of the article,this is mentioned:
24 Hours of Fun and Entertainment in Three Disney Parks Â« Disney Parks Blog
I am very excited that this long time tradition will continue at the park. It just shows you that you can't always judge Disney too quickly when it comes to things. Every one thought that Disney had lied about the Swing Dancing returning but here it is coming back.During the All-Nighter, the Royal Theatre at Fantasy Faire hosts a Royal Swing Ball, with a live band from 10 p.m. – 1:40 a.m., and beginning June 15 the “Jump, Jive, Boogie Swing Party” will return to the Royal Theatre for select nights during the summer. Keep an eye on the calendar page on Disneyland.com for dates and information.