I am 16. I pretty much organised this cruise, mum paid and brother (14) came for the ride
Embarkation at Dover was easy. The check in queue moved quickly, and there was a short wait to board, but the process was all very efficient.
During the day, the pool had quite loud music playing, whether it was live or not. The music was usually played over and over again. The pools were good, as was the slide. The lounges were spacious. In my opinion, Spinnaker was the best, as it provided quite a variety of seating, and a number of activities. The teen club wasn't fantastic and a lot of the activities didn't materialise. I would recommend going on the first couple of nights, just to make friends. I had no issues with any of the public rooms, and had no bad experiences.
Bow waves broke right ouside our cabin, good position regarding stairwells, crowded with 3 people, no public rooms above or below.