My group of 5 chose this cruise because of the itinerary - seeing many ports around the UK, and only two days at sea.
Thoughts:
Boarding: Very good, very fast. I thought Norwegian did a very good job of getting us onboard with minimum fuss and hassle.
We really liked the room. Forward, Port, far enough from the elevator so we didn't hear any noise, but close enough that it was easy to move around the ship.
We took the Paddywagon Tour of Blarney Castle and Kinsale, and it was better than I expected it to be. Our driver provided an excellent monologue as he drove along, and we found the Castle and Kinsale to be excellent destinations.
We booked with Kinlay Francis of Orkney Uncovered, and Kinlay provided an outstanding day-long tour. Highly recommended.