We booked the first Caribbean (actually it was in the Atlantic) for this new ship -- which was launched in Europe the summer of 2013. It had completed its transatlantic cruise to Ft. Lauderdale and this was the initial 5 day sailing which included a day at Princess Cays, a day at Grand Turk, and two days at sea. The ship is the largest of the Princess fleet. It was beautifully outfitted with all types of venues available. It was fully booked and holds around 3,600 passengers. I felt that the service, in all areas, was good and efficient. We ate in the buffets and the traditional dining room -- and the food was well prepared and the variety good. There were no problems with substitutions (ie: no potatoes, but more veggies, etc). The shows were all well done and appropriate for any age range.
The buffet eating venues (Horizon Court and the adjoining Bistro) provided excellent food selections as well as abundant seating. There was never a problem getting a place to sit and eat.
There was no central staircase bethind the central elevators -- a staircase ran from deck 5 to 6 and 6 to 7, but not beyond that! That necessitated unnecessary central elevator use, or the need to go to either the far aft or far forward stairs! This made for heavy traffic on the central elevators. All other Princess ships have a stairway to all floors behind the central elevators.
In the Princess Theater, there are no cup holders -- although bar service is provided. Therefore you either held your beverage, or sat it on the floor! Not the best arrangement to say the least.