They talk about a lot of the main points that you learn in the movie or any newspaper but you also get to see things that were recovered from the wreckage. They've also got models of other parts that could not be removed from the wreckage. There is information about some of the people that were on the ship and lost their lives and things about the people that survive. Some of the walk through is made to look like you are walking through the ship.
I'm not a Titanic buff or anything but it was an interesting experience. If they lie about a few points I wouldn't notice. I'm sure there is more truth here than in the movie.
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