I watched "Avatar" as background noise when it first came out and didn't really feel one way or another, but I probably will watch it again before I go for Opening Weekend - just as reference. But I DO love the concept of worlds and environments other than our own that humans could habitat eons after our lifespan (and those after us) cease to exist, especially when there are examples that we as dwellers of Earth have a chance to experience.
Like the River ride going through a bioluminescent river - one of the most amazing things I've done is kayak through
Mosquito Bay in Vieques, Puerto Rico ... which is the brightest "bio bay" on the planet.
Previous posters brought up the concept of the movie - it's basically sci-fi "Pocahontas" in plot line. But while it won't happen in our lifetime (colonization of an alien planet to sustain the human lifeform), it does really strike a chord with me because I worry about the state of our planet as we are now, and especially for the Littles in my life.
To me - in this case, "Avatar" the film provided the ground-level concept for Pandora and WDI was tasked with evolving it more than even the sequels or the movies could (because, let's face it - James Cameron would make "Titanic 2: Jack & Rose Reunited" if he thought it would be a hit at the box office ... I think he's a hack as a movie guy). If I was a betting woman (I am), Cameron was banking on this being the "If you build it, they will come" kinda thing for the sequels. But I don't think the two have to be mutually exclusive.
I'm excited to see a new area, to be immersed in something that has notes I'm familiar with but takes them to the next level. To see the sights, sounds, tastes and touches of something completely new. When Disney does something new and immersive, we ALL win. CarsLand is the most amazing area of a park I've ever experienced. Every night when I'm back home, I wish I was sitting on Route 66 watching the neons come up in Radiator Springs. Not eating at Flo's or Cozy Cone. Not riding RSR or Luigi's. Just sitting there, and feeling like I was IN the movie. And I was NEVER a "Cars" fan.