I enjoyed the movie, but mostly because of the 3D, which I admit was very good. I thought the story was pretty thin and predictable, the characters stereotypes and I became irritated by the preachy nature of the script, which I felt was kind of insulting to the viewer – it was hard to miss the environmental message in the story, so I thought it was totally unnecessary to go on about it in the dialog as well.
As is inevitable with such a film, I felt it dwelt on many scenes for too long, showing off the 3D and CGI. I would have preferred it if they had kept the script tighter, so that the 3D/CGI enhanced the film, rather than being the raison d’etre. As a result I think the film would have been improved by being 20-30 minutes shorter.
Some people have reported headaches when watching this film in 3D – I didn’t suffer from that, but I did find that my eyes kept tearing up, requiring me to remove the glasses several times. I know that this was not due to emotion, so I can only put it down to some kind of eye-strain. Because of this, my jury is still out regarding the future of 3D movies.