This was the first cruise my wife and I have taken and we went on this cruise as part of a company trip. As a result, I have the first time cruiser perspective but can't compare this to other cruises.
A few, perhaps useful observations:
1. The ship is huge but it doesn't feel crowded. Both points were a surprise to me. What was so nice was that the interior is both broken up and varied. I think this is what RC calls Neighborhoods. With few, very cool, exceptions, your line of site just isn't that long. As a result, you are always around people but you don't feel surrounded by them. At the end I learned we had something like 6,400 passengers and 2,200 crew on-board. It didn't feel that way when we were on it.