Cirque never has performances on Sunday & Monday (that's their <weekend>)...which are the 25th & 26th this year...so...they are on hiatus 20th-24th...then 25th & 26th are Sunday & Monday...so there will not be another show until the 27th. So what they have as their hiatus is decieving.
Copy & Paste from the Official Disney site:
No performances on Sunday and Monday, or on the following dates:
January 18 - 22, 2011
March 22, 2011
May 17 -22, 2011
May 24 - 28, 2011
July 26, 2011
September 20 - 24, 2011
November 22, 2011
Mickey's Not So Scary Halloween Party: There were literally no lines at popular attractions. I think this is due to most party goers are parents with children...so they're taking them around trick-or-treating instead of on rides. It's easy to get all your favorites of the popular rides that you would normally waste time in line any other time...and still be able to catch the parade, fireworks, and Villian Dance party later on in the evening. The parade & fireworks are different then the regular parade & fireworks shown.
Example of little / no wait times: In less than one hour I rode: Pirates, Haunted Mansion, Splash, Philharmagic, and Peter Pan's flight...and still had time to get a Dole Whip float and scope out a bench in a prime location w/ unobsrtucted views to watch the fireworks (HalloWishes).