As some other reviews have stated and holding true to movies four and five, Harry's sixth year at Hogwats was not portrayed on the silver screen as it was written in the book.
Aside from that, I walked out of the theater disappointed in the slow and uneventful movie. The "magic" that viewers normally feel while watching a Harry Potter movie just was not in this film. My nine-year-old son even walked out of the theater and loudly stated, "Well, that was a rip off."
If a creative and imaginative nine-year-old didn't feel the magic and awe that is expected from a Harry Potter film, I feel that it is practically a lost cause for us adults.