The Norwegian Sun receives mixed reviews, with many guests praising the friendly and hardworking staff, enjoyable itineraries, and good value for the price. However, there are consistent complaints about the ship's age, food quality, crowded areas, and occasional service lapses. Entertainment and activities are generally appreciated, though some found them lacking compared to other cruise lines. Excursions are often described as overpriced, and issues with cabin comfort and ship cleanliness are noted. Overall, the cruise offers a solid experience for those prioritizing value and itinerary, but may fall short for guests seeking luxury or gourmet dining.