This film is largely criticised for not being true to the books etc, as I'm sure you are aware. However one thing that cannot be ignored is the fact that this is a GREAT film.
Some have criticised the Lord of the Rings trilogy for focussing so much on epic movie making, the story was neglected. However with the Hobbit, the best of both worlds has been achieved.
I went to see this film, and it has got to be one of the best movie experiences I've ever had. There's comedy, action, and the spectacular non-CGI scenery thats typical of Peter Jackson. The first film was perhaps a bit slow to start, but after watching this sequel, you'll forgive the filmmakers, as from the moment you see the words 'The Hobbit', the action starts.
Buy, watch, and enjoy!