The operative word there is "MOST". My guide told me that 78% of the rooms will indeed be Savanna view, but that means 22% wont be, so unless you book Savanna view to guarantee that, it will only be a request. As for the size. The speculation here has been that all value rooms will be smaller, but I have not seen or heard anything official on that as yet. Even the guides seem to not have all the information.