Great film! Don't judge it against facts as it's only loosely based, judge it on being an intense, great effects, romance, tear jerking film. It is long, but to edit any of the chapters out would have made the film disjointed. I normally don't watch films longer than 2 hrs, haven't seen countless blockbusters because of the film length, but this one had me gripped from the onset!
Again, don't judge it against real events, had the film title been anything else, I don't think many of the negatives would have been written.