The movie was good. We all liked seeing the actual city, the old buildings, even the clothes people have worn through generations. As it usually is, the movie is never as good as the book, and we were prepared for that. What we didn't understand is why they had to bring a "monster-size" mole type creature into the movie version, when there wasn't any of that in the book. Same goes for the giant moth! They also changed some of the main parts of the story, such as how the two main characters find the way out, but we all agreed that it was a good alternative anyway.
I am trying not to give away too much of the story, in case you go and see the movie!
I have often thought in the past that maybe if we read the book, we shouldn't bother watching the movie version, but I have now decided that we should keep doing both. We like to read and we like to watch movies, and all the conversations that are started because of the differences and adaptations are a lot of fun!
While I was searching for some pictures to add to my post of the movie, I found this site called City of Ember Underground ...it isn't exactly from the movie, but has a lot of underground photos of many actual places that could remind you of the story. Especially this one from the Japanese storm water drain!