I doubt it will bomb. As a general movie, I expect it to be a total CGI-Fest that anyone that has interest in fantasy films will enjoy. As a lore-buff however, the novel helped me focus on the re-look at the story. It's not however, by any means, required reading.
Pre-Novel and a Novelization of the actual movie plot. Both by Golden, so decent reads, and the pre novel at least did help me get my head out of what I knew and focused on the story they are trying to tell.