NEW YORK (AP) — One of Comcast's fastest-growing businesses is theme parks — not selling cable or internet subscriptions, or making movies and TV shows, or selling TV ads. Since 2011, when Comcast first took over NBCUniversal, its parks have been one of its biggest revenue drivers, even though they were barely on Comcast's radar in the acquisition. But the Florida Universal park had opened a Harry Potter attraction in 2010, and it was a smashing success.Read more on NewsOK.com