The Harmony of the seas is a beautiful ship and the cruise was a lot of fun. But there are some real issues with the number of passengers which clearly affect the quality of service and activities. I do want to add the kids loved the cruise but they recognized the limitation with having 5000+ passengers on a cruise ship. This cruise was only 80% full and the staff and activities felt very overwhelmed. The service always felt rushed and overwelmed just because there wasn't sufficient staff to accomodate the sheer number of passengers. The common areas used for activities were way too small for the number of passengers attending each event. And on the sea days the number of activities seemed lacking. But there was a lot of positive as well. Many of the shows were very good and were unique to cruising. The food in the MDR was good. We went to three specialty restaurants and they were very good. The restaurant that truly stood out was 150 Central Park. We definitely enjoy RC cruises but wouldn't make an Oasis class ship a top choice in the future.