Harmony of the Seas receives high praise for its impressive ship design, friendly and attentive staff, and wide range of activities and entertainment options, making it a favorite for families and first-time cruisers. Most guests found the service exceptional and the ship clean and well-maintained. However, some reviews mention issues with crowded public areas, long elevator wait times, and inconsistent food quality, particularly in the main dining room. Specialty dining and excursions received mixed feedback, with some guests feeling the extra charges were excessive. Overall, the cruise offers a memorable experience with a few areas for improvement.