Let me start out by saying, visually, it was beautiful.
I had just reread the book before going to see this movie so, it was fresh in my mind and I'm probably a bit biased. I knew there would be changes, but I don't see why it was necessary to change some of it! In fact, they added TWO scenes that weren't even in the book but left out some very important information or skimmed things that were prominent in the book.
Even during the movie, I thought to myself, " What if I hadn't read the books? Would I think this was a good movie? Would I get what was going on?" I still think the answer is NO.
I feel like I would have been pretty lost if I hadn't read the book first.