Likes and dislikes are individual tastes and here are mine.
There are many pluses about the Nautica. The staff is very good. The rooms are comfortable with marvelous mattress and bed linens, plenty of storage, and adequate 220 and 110 outlets. I could bring alcohol and wine on board. Water and sodas are complimentary and water is always on the gangway as one debarks. Also, my cell phone received a signal on days at sea and in most ports (I have a SIMM which has both a US and international number). The best things about the Nautica are the size of the ship and its itinerary. These were the two reasons I chose to sail with Oceania and in neither was I disappointed.
Entertainment is not a big deal to me. I am focused on the ports, people and their culture. However, Nautica seems to do a good job trying to entertain as many people as possible with a veritable plethora of games, contests, trivia, projects and crafts, and some lecturers. Terry Bishop, a historical lecturer, was excellent. The bands, from what little I heard, were good. There are endless interest groups almost to the point of nausea.
Excellent use of space. Close to the bow so in rough seas there is a bit of bounce. Includes refrigerator, safe, flat screen TV, ample storage in both bathroom and cabin. Could get wifi signal in the cabin.