I think that you are thinking about the 999 Happy Haunts Event. Here is the information from the Disney Website:
999 Happy Haunts Event
There are packages that include hotel and extra activities. Here is the "basic" package:
EZRA Event Package
Event Date: October 27, 2004
-Entry into Magic Kingdom® Park (on 10/27/04 after 7:30 p.m. for event)
-Enjoy Spirited Entertainment (10/27/04) made especially for the Ghosts of the evening
-Themed dinner and dessert reception (10/27/04)
-Ride on the Haunted Mansion attraction (10/27/04)
-Meet & Greet with Artists of the 999 Happy Haunts Event Merchandise (10/27/04)
-Opportunity to Pre-Purchase Limited Edition 999 Happy Haunts Event Merchandise
-Special art showing & presentation of a Haunted Mansion first time piece by ----Disney Collector Edition
-Commemorative Gifts
-Unless otherwise stated, all elements will occur or be available only on 10/27/04.
TICKET SALE INFORMATION:
Tickets for EZRA event package are $149.99 per person. Limited availability. No discounts will be offered in conjunction with this package.
ALL ELEMENTS OF THE EVENT ARE SUBJECT TO CHANGE WITHOUT NOTICE.
No items in this package may be redeemed for cash, and all items (and portions thereof) are non-refundable, non-transferable and will be forfeited if not used in conjunction with the 999 Happy Haunts Event. Other restrictions apply. Separate admission is required to enter Walt Disney World Resort Theme Parks prior to the event.