Theme park and those whom license characters to theme parks (Disney, Universal, Six Flags, etc.) are finally seeing the money of using an AR app inside the park. However, they constantly turned down these pitches for over a decade. Nintendo made it happen. There are now non-licensed IP characters shown in their parks via the Pokemon Go app.
Allegedly, park owners are pissed not being the first one to capitalize being too conservative. It will get real soon and possibly a redefinition is real estate law vs. first amendemt. Is this trespassing or free speech? Expect it to get real soon. Supposedly, Walt's statue in Disneyland is a Pokemon Gym with differnet lands set as Pokè stops with no approval from Disney Corp.
If people pay $200 for a ticket to be able to go into a park to see a gym ( you'd have to be like AT the statue) or to collect a few items from a poke stop I really don't think Disney is going to care. Disney profits if somebody goes and sits at a statue or if somebody goes and rides every ride. The person playing Pokemon is probably more profitable since they'll probably buy more food and beverages while walking everywhere.