The thing with this one (and, no, I'm not trying to tempt you into reading the rest of it
) is that the descriptions are so sparse, and the actions sequences so (potentially) spectacular, that the book can only give you a very rough idea of what the film will actually
look like.
By this time last film, we had already seen photos of nearly all the scenes, so we could link that in with the novel and scripts and get a pretty good feel for what the whole thing would look like, but we've seen next to nothing on this one.
Film in general is a visual medium, and that applies ten-fold to this story. If they can actually pull off some of these visuals, it should really be something to see. That's why I actually felt more anxious to see the movie after I read the book than I was before.