Do you mean the loading dock for the Columbia/Mark Twain (in Frontierland) or the dock near Haunted Mansion? I think there might be some standby viewing area over by the dock near Haunted Mansion. On Sunday, the CMs were letting stand by guests line up near Harbor Galley just before 10:00 pm. I think they ended up letting them into an area near the the rafts, but I'm not 100% sure (it was to the left (when viewing the "stage") of the dining package viewing areas).