Not worth the extra cost
Admittedly, it is a beautiful ship with a LOT of nice features, but is it worth a markup of 2-3 times the cost of a similar itinerary on a smaller ship? Not in my opinion.
Just got back from the Eastern Itinerary and was very impressed with the ship, but I would wait a couple of years for the enormous hype to wear off and get this at a much more reasonable price.