A movie shot at Disneyland and Disney World was shown at the Sundance Festival. What's odd about that? Well, for starters, it's a dark, controversial film. And for closers, the Disney people didn't know anything about it. The filmmaker, his crew and his actors went to a park each day, paid admission and shot with small cameras.
But the Disney company knows about it now. If they didn't already, this article in the L.A. Times puts them on notice. Will they try to stop the movie from getting a general release? I would guess that the article doubles or triples the likelihood that they'll set their lawyers to the task.