NBC News: The “Happiest Place on Earth” may soon take a pointer from Uber. Disney is considering a plan to increase prices for admission to its theme parks on busy days and lower them on slow days, similar to the demand-based pricing system used by ride-hailing apps, airlines and hotels. “We continue to evolve the way we think about managing demand — particularly during our busiest seasons — in order to deliver a world-class experience for our guests.”