I took my 77yr old Dad to see it- he hasn't been to the Cinema since 'Who Framed Roger Rabbit", he absolutely loved it.
I am a fan of the book and was a little upset by the skipping of certain plot lines and the introduction of others. However. for the sake of narrative in the Movie I can see why they did it.
I am of the opinion that for me, the movie and the book are separate enjoyable events.
I thought the movie was great actually and will be watching it again just to soak up the details.
Like other book adaptations sometimes the movie-isation happens to please Producers/ investors or else the flick wouldn't be made at all.
I am still waiting with baited breath for film adaptations of the Wasp Factory (script optioned 2011)and The Forge Of God (script working 2010), apparently only 5% of scripts optioned ever get made.
I am glad this got made and as I said, I really enjoyed it.

Graham