Such movies are once in a lifetime experience. Avatar 1 was groundbreaking when it came to experience 3D technology like never before. But Avatar 2 is so beautiful to watch that at some point it didn't matter if you watch in 3D or 2D it would still be a spectacle. The core message of protecting your family at all costs is what drives the movie. It just gets bigger and better.
The beautiful night water scenes resemble that of Life Of Pi, the climax scenes of sinkinv enemy ship resemble that of Cameron's own Titanic movie, it's just so nostalgic. This is why Cinemas will undoubtedly be the best place to watch movies like these will always be in demand.
Watch it at all cost