Patrick, Phoenix, Arizona
A: There would be many hundreds. Music has always been an integral part of the Disney parks.  Individual attractions have music, but there is also background and atmospheric music almost everywhere one goes—in shops, in restaurants, and throughout the various lands. Outdoors, speakers for the music are usually judiciously hidden—behind landscaping, in faux boulders, and in the architectural details of buildings.
Allison, San Francisco, California
A: Meg Crofton, Walt Disney World president, stated in a 2007 press release: “The new name reflects how the park has grown from representing the golden age of movies to a celebration of the new entertainment that today’s Hollywood has to offer—in music, television, movies, and theater.” The change was also made due to the ending of a licensing agreement with MGM Studios.
Mary, Havana, Florida
A: Your particular figurine is not familiar to me, but with that particular copyright notice, it would date between 1971 and 1987, the years that the Florida Citrus Growers sponsored the Sunshine Pavilion at the Walt Disney World Magic Kingdom. During that period, Orange Bird merchandise could be found at various citrus stands off the Florida highways.
Charles, Williamsburg, Virginia
A: I do not know what happened to the Orr collection.  Both of the authors of the 1995 book—David Mumford and Bruce Gordon—have  passed away. The Walt Disney Archives does have a very large collection of Disney park postcards. The Archives is not open to the public, but if you have specific questions, they can try to answer them for you.
Patrick, Marlton, California
A: Many different types of engineers are needed to create the Disney park experiences—including electrical engineers, civil engineers, audio engineers, and mechanical engineers.