Overall, we enjoyed our time on the Sun. The ports of call were lovely. We did all port excursions on our own except for Ilha Grande (Schooner and Snorkelling Adventure). We used the Spa a number of times and were satisfied with the services.
On one of the sea days, we wanted to take the "Behind the Scenes Tour" of the Ship.
We went to register and Norwegian was charging $79 per person. This is robbery for a guided tour of the ship we are already on and it didn't offer any extra food or beverage or bonus. In the formal restaurants, many men (including teenage boys) did not adhere to the "smart casual" dress code of jeans or slacks with a collared shirt and closed-toed shoes.
The room was more spacious than we expected. Good condition too. Would have been helpful to have a Paper Recycling Bin in the room for the Daily Itinerary.