I think mouseguy77 was referring to the script in the Haunted Mansion's music room and staircase and commenting if the hatbox ghost makes for 1000 happy haunts. The script says : "They have all, retired here to the Haunted Mansion, actually we have 999 happy haunts here, but there's room for one thousand. Any volunteers?? If you should decide to join us, final arrangements, may be made at the end of the tour."