I think that's for a park capacity thing more than anything, as some years both Mansion and Small World close at the same time for 10 or 11 days to remove the Holiday overlay. But this year the Rivers of America was walled off and began draining for a five month rehab (REHABS RUIN VACATIONS! :lol: ) on Monday, January 4th, so they are staggering it a bit.
Haunted Mansion is closed to remove the Holiday overlay from January 4th until the 14th (RUINING VACATIONS! :lol: ). Then regular Haunted Mansion and Small World Holiday operate through the Martin Luther King Jr. holiday weekend. On Tuesday, January 19th, Small World Holiday closes for 10 days to remove the Holiday overlay (RUINING MORE VACATIONS! :lol: ).
I will say at Disneyland this year, Santa's Reindeer Ranch and the Roundup Show closed promptly on Monday, January 4th. Garland and decorations were removed from Main Street for two days, the lights began removing from the Castle, and the Christmas Tree in the Town Square was gone last Wednesday. With the Christmas Tree gone, the regular music loop was turned on and the Christmas Carols were removed. You could tell they were moving farther into the park with the decoration removal when I visited last night, and with the main stuff gone all area music loops had the regular music playing. They decorate every single land in Disneyland for Christmas, except Tomorrowland. DCA has some fairly extensive Christmas decor as well, and that's coming down quickly this week.
New Orleans Square offers a good sampling of the type of Christmas decorations Disneyland puts up and takes down each year, so it's no wonder it takes them more than a week to get it all down. Every lamp post is decorated, every shop and balcony and doorway in that land gets the Jazz Age Christmas treatment.
I wouldn't want to have to pack up all this stuff every year, would you? :lol:
New Orleans Square Lamp Post
http://ocresort.freedomblogging.com/files/2008/10/dsc_0288.jpg
New Orleans Square Royal Street Garlands
http://farm4.static.flickr.com/3183/3077034700_d24ed93def.jpg?v=0
New Orleans Square Shops and Balconies
http://www.mouseplanet.info/gallery/d/80758-1/NOS2-110108-AVP.jpg
New Orleans Square Alleys
http://farm4.static.flickr.com/3409/3413682854_caf73e29e8.jpg
New Orleans Square Courtyard Of Angels
http://farm4.static.flickr.com/3098/3167131265_e67842f88a.jpg