I have been on the Ncl Pearl and the Dawn. The sun is the same size of ship.
I have had alot of fun, food and entertainment with Ncl. Here are some things that are different from Rccl and Carnival. There are 12 choices of resturants on the ship but you have only paid for four of them in your cruise price. They really want you to try the "pay" resturants. The buffet is really good. Also three times as large as Rccl buffet on there smaller ships.
And the selection of different foods are great. Desserts and warm cookies too
I really like that they have "heated" pools. It takes till noon or so for the pool water to get over 80 degrees but it gets there. I have frozen in many Rccl pools. I head to the hot tubs in that case. I also find the staterooms are very roomy. As for entertainment I don't really think it was 5 star but I don't remember it being bad. Have a great cruise.