We are going on the Ecstasy in March with our 2 girls ages 14 and 15. The 15 year old turns 16 while on the cruise. Are there lots of things for them to do on this ship? Does anyone recommend any excursions we would enjoy as a family? We are going to Cozumel and Playa Del Carmen. Thanks for any replies. Btw, this is the girls first cruise and my husbands and my second.