It was too long, 30 minutes could have been cut. The IMAX 3D was okay. Just didn't do it for me. Wearing those glasses for so long was no fun. I suppose if you like long movies and like animated movies it was good. I'd would only recommend seeing it in 3D. Not sure what the IMAX was all about. I know that my husband really enjoyed it. DON'T even compare it to the "Titantic" which was a GREAT movie.