From the Orlando Sentinel:
I wonder if they're gonna turn on the Yeti for his big day..Thrill seekers, get ready. Walt Disney World passholders are invited to a special event to celebrate the fifth birthday of Expedition Everest.
Pre-registered passholders can “get your fill of Yeti thrills” from 6 to 9 p.m. Saturday, March 5 at Disney’s Animal Kingdom, according to the latest edition of Mickey Monitor. The theme park is scheduled to close at 6 p.m. that Saturday, so it’s a rare after-hours event.
Sign-ups begin on Feb. 18 at disneyworld.com/passholder. You must be registered on the site and have your current passholder ID on file to gain access to the sign-ups.