I am a huge Harry Potter fan. I've read and loved all of the books and have seen the first 5 movies countless times.
We've been waiting for this movie since the last one ended and I can say, it was NOT worth the wait. The movie was almost 3 hours long, which would have been fine if it conveyed the same sense of adventure/danger/excitement as the others. Unfortunately, it was, for the most part, boring. It felt like a lot of the film was thrown together and some of the acting felt forced.
In a long series of movies, there's bound to be one that isn't so great. This is by far the worst of the series.