I will make this short w/o a lot of fluff. The Norwegian Sun, narrow beam and tends to react badly to rollers. Any time we were going into them they had to close the pool due to the water surging back and forth.
The cabins, deluxe with balcony were great and the cabin attendants great. The pool, as usual on most ships, has too many guests and no enough space for lounge chairs for all. Well, too bad I guess the early bird gets a good location.
The disembarkation process is slow and uneven, plan to stand in line and wait a lot. To compound the problem you cannot hear announcements inside the cabins.