The ABC series Disneyland began, in 1955, as a thinly disguised full-length prime-time promotion for Walt Disney’s theme park, which was about to open. Today, there are two parks in the U.S., and more around the world, but the concept behind tonight’s holiday special is precisely the same: Magical Holiday Celebration is meant to showcase, and promote, Disney’s theme parks. The guest stars scheduled to perform include Gwen Stefani, Meghan Trainor and Andrea Bocelli – and the only real difference between this 2018 ABC special and the premiere of ABC’s Disneyland is that, this time, ABC is owned by Disney.