We were originally booked in a balcony room. Carnival called us a couple of months before the cruise to ask if we wanted to upgrade. We paid about half what this cabin usually costs which is a good deal but no "butler service" at that price. We got VIP boarding but otherwise no special VIP treatment.
The cabin is really nice. Our daughters are 3 and 5 so it was great to have a bath tub. It was nice having two bathrooms too. There are 2 large flat screen TV's, one in the main living area and one in the bedroom. The view is fantastic during the day. At night you need to keep the curtain shut because the bridge is directly below you and you could interfere with their navigation. If you open the curtain at night(it's electric and operated by a switch, pretty cool)you won't see anything except the glare and reflection from the lights in your room. The outdoor light on the deck didn't work. We called guest services and asked them to fix it but we were told the captain had it disabled because it interfered with navigation.
The balcony is HUGE. You could fit 20 people out there. There are 4 lounge chairs, 2 deck chairs and 2 tables out there. Because your balcony extends out beyond the side of the ship you can look down and see all the other people's balconies. And when you do that everybody else can see you too. When you stand out there you can expect people to yell out comments like, "Hey! Whud ya pay for THAT cabin?".
We had a great time and loved the cabin. You can't beat the views from the giant forward facing windows and huge balcony. I would never pay the full price for this cabin but if Carnival offers it to you for 1/2 price then take it!