If you stay at CBR for a honeymoon, request a room in one of the farther out sections--away from the hustle and bustle. Trinidad South with a water view would be an excellent choice for a honeymoon. It is more romantic and out of the way.
If you decide to spend extra money on the beach club, you will get the added benefit of a gorgeous and very romantic night time view of the Beach Club/Yacht Club/ Boardwalk area and promenade. I have strolled around the beach club area at night and it truly breathtaking--very magical. Plus, there are more dining options and the MGM/EPCOT location can't be beat. If you can afford it, I would spend the extra money, but I don't think you can really go wrong with CBR either, as it is also beautiful--just not quite as upscale. Just depends on your budget really.