"My only issue comes with the book, when the characters then broke the the fourth wall, and became giving what seemed like documentary commentary to explain the survivor situation/aftermath."
that was my only problem with the show, as well. (Well aside from the characterization of Bruce Ismay but I'll accept it because it's theater and they needed to make the 'this is why the ship sank' narrative more cohesive.)
It was truly bizarre and took me from being extremely emotional to thinking: "Huh?" It's such a long sequence, too, making it harder to get back into the show after it finally ends. It would have made more sense to have some sort of conceit like the survivors being hounded by reporters, anything other than bringing down the victim list and having them break the fourth wall.