After recently finishing Harry Potter and the Chamber of Secrets and watching the movie, we didn't wait long before digging into the third book in the series, Harry Potter and the Prisoner of Azkaban. Both of my daughters were super excited to start. We're far from finishing, but I must stress again what an amazing family experience it is to read full length novels together! We all sit on the couch together and read 20-40 pages at a time. It's a great bonding experience. Having a movie to watch after the book adds to the excitement!
I encourage you, if you aren't already, to do something similar with your kids. It's great family fun!