Saw this yesterday - thought it was all over the place. The first hour is pretty good, faithful to the book...then it just completely derails into something the screenwriters made up. A disappointing end to the trilogy.
There were some glorious moments, but there were also some "what were they thinking" moments as well. But as much as I love these films, that's been the case with all 6 LotR/Hobbit movies. While The Desolation of Smaug was stretched out too thin, this one felt choppy and rushed in most parts (at 2 hours 15 minutes it's the shortest PJ Middle Earth movie). Still the finale was saved for me by the amazing chemistry and performances of Martin Freeman and Richard Armitage.
Aside from one particularly disgusting moment with Stephen Fry in "Smaug", I do prefer the extended editions for the previous two films and can imagine a handful of my criticisms in film 3 being corrected by clearly missing scenes.
The film did feel rushed and left many loose ends. I enjoyed it a lot but I'm definitely looking forward to the extended cut next year. I thought the Galadriel scene was fantastic and Martin Freeman is wonderful.