Keep in mind that there are two types of "honeymoon rooms" at the Grand Floridian. Both are the same price and in the main building, and both have concierge privileges and king beds. You can request either type, but it's just a request and not guaranteed.
Here are the basic differences and similarities:
--Regular Honeymoon Rooms--these are quite a bit smaller than the other type; they have a king bed and a sitting area; the bathtub is a jacuzzi tub, but it's only big enough for 1 person at a time; these rooms are all located in a secluded section of the second floor of the main building and they all have Magic Kingdom views; they feel very secluded from the rest of the main building; they also all have balconies (these rooms are located above Gasparilla Grill if you're familiar with the resort layout)
--Honeymoon Turret Rooms--these rooms are larger and have a unique layout; they have large walk-in closets, but the tub is not a jacuzzi type tub; these rooms do not have balconies, but the bedroom and sitting area is located in the big turrets on each corner of the resort and have windows all around the room for a semi-panoramic view; some of these rooms have Magic Kingdom views and some do not (this can be requested but not guaranteed); these rooms are located on the third, fourth and fifth floors of the main building in the turrets, so they are not as secluded as the other room types
We actually stayed in both rooms types on our honeymoon. We only had the regular honeymoon room for the first night of our honeymoon (our comp night), and we didn't remember to take pictures of it. We then were moved to a turret honeymoon room when our cash reservation took over the next day. It's just a matter of personal opinion, but we preferred the turret honeymoon room because of it's unique shape and "personality," and we didn't even get a MK view turret room. Of course, others prefer the regular honeymoon rooms, so it's just a matter of opinion. Do keep in mind though that Disney tries to grant reservation requests, but there are lots of honeymooners and Disney brides staying at the GF at any given time, so they can't guarantee you'll get what you want.