As much as I've grown to dislike the idea of Avatar in the parks, I don't think it'll get canceled. Disney has to go through with it in some form. This isn't Rocket Rods--they can't just say 'screw it' and quit. They have a huge investment in this property. They can't just give the rights back in exchange for a refund. Disney is going to have to do something to get a return on their purchase, even if it means complying with Cameron's crazy demands.