We took our third cruise last February when DD was 17 and a senior in high school. It was to be our last big family trip before he started college. He had been on the Magic before, so he knew what to expect. To be honest, it turned out to be a quiet week for him. He hung with us most of the time, in fact we took him to the "adult" type shows in the evening when his sisters were in the clubs. He was a little too old for the teen activites and didn't mind staying with the adults in our party. He insisted that he had a very good week. It's a tough age..not really grown up but not a kid either. If you are a close family, it will probably be a good vacation for all.