I haven't read the book in four-ish years, so what they cut out is a little fuzzy, but everything I remember happening in the book, happened in the movie, so I was well content.
All the stuff with the ball was absolutely great. When they're first told and all the girls get excited and all the boys start grumbling and looking around in annoyance. It's perfect! The actually ball was absolutely lovely to watch, all the pretty reds and such. And oh my god! Jarvis Cocker was in it! Why did no one tell me of this!?!
It just all really felt real. This is how teenagers act!
All those kids really know how to act, except in the one scene where Dan Radcliffe has to show actual emotions. I just didn't believe his crying at all, and that just really took me out of the moment. That part was awfully annoying. But then Jeff Rawle started screaming and crying, and that part broke my heart.
No one broke my heart like Neville (Matthew Lewis). He was just so adorable! Everything Neville does makes me happy, and I really like how they gave him a slightly bigger role in this movie than in the book. He's starting to look... well, nice.
Tom Felton is also starting to look a little dashing, especially in a suit. But I probably shouldn't be talking about kids who are younger than me. So, uh, how about that Alan Rickman? He was hilarious. He had about three scenes, but he was brilliant in every single one of them. It's incredible how he can just express so much with just a tilt of the head.
Well, I could go on and on (especially about the dragon scene, that was awesome!), but in the end all you need to know is that this movie is worth seeing, so go see it!