I was wondering the same information, we are going at the end of Jan. I know there is another thread about this, but this is the information I found:
From Alleasnet:
Holiday Sleigh Rides -- Enjoy a leisurely 30-minute carriage ride through the Walt Disney World backwoods from November 30 - December 30! . All rides depart from the Porte Cochere in front of the Wilderness Lodge and will return to the same location every half hour between 5:30pm and 10:00pm (December 24th hours are 3:00pm - 7:00pm). Cost is $30 (tax included) per carriage. Up to 3 adults and 2 children or 4 adults will fit in the carriage. To reserve call WDW-PLAY; Please arrive 15 minutes prior to ride time. For same-day bookings, call 407-824-2832. A $30 fee will be charged for no-shows or for cancellations within 24 hours.
No smoking allowed. You may bring drinks on board. The ride will go out in mist, but not in rain. Trips may be cancelled due to inclement weather and rescheduled in which case you will not be charged.
Hope it helps.
Sharon