Go see this movie just for the visual effects and entertaining story line turned into semicomedy. If you're a true HP fan then you'll be disapointed. They omitted 2/3 of the book's story lines and only kept bare minimum, and added parts that were not in the book which don't really help the movie. From a fan point it's shallow and missed some of the best parts, but from overall movie it's entertaining.
Predictable to the core, mediocre to say the least. None of the bloody fights were necessary and first 45 min could easily be skipped. Liked graphics and visual effects but it doesn't compensate for lack of good story line.