Theme park attractions don’t normally require real suspension of disbelief. You strap into a vehicle, get swung around a bit, and then you’re off and running to the next line. But when you’re dealing with an entire immersive world, like Disney’s new Pandora: The World of Avatar, that dynamic changes. There has to be a narrative behind the ride, an in-world reason for people to line up when they’ve ostensibly traveled to an alien world known for its lush, exotic landscapes....