We got special passes before it opened. The exhibit is just amazing. There are no words to describe some of the things you will see.
The movie was disappointing. It's more about the crew on the ship that was filming the movie then the actual titanic. the movie is like 40min long and the titanic is on screen for maybe 7min. plus they tried to fill it with pictures and stories, and while we were there the director was there and he told us all the photos were photoshopped to move the story along.
So my verdict is the exhibit all the way. If you can don't see the movie, it's not worth it, your time is better spent in the exhibit.