Harmony of the Seas receives high praise for its impressive ship design, friendly and attentive staff, and a wide range of activities and entertainment options. Most guests enjoyed the food, service, and cleanliness, making it a popular choice for families and first-time cruisers. However, some reviewers noted issues with crowds, elevator wait times, and additional charges for certain amenities. Food quality in the main dining room and specialty restaurants received mixed feedback, and some guests found the ship too large and overwhelming. Overall, the cruise offers a memorable experience with a few areas for improvement.