I was on that NYE cruise on the Fantasy and there were lots of drunk youth. My dh saw a few kids throwing up. My ds told me that many of his pals from the vibe were drunk but he didn't drink. Very hard to control the alcohol on deck that night. My only recommendation is that the parents check in with their kids. Also, kids were just grabbing half-empty champagne glasses that were left around the deck, so its not like they were necessarily being served. Sometimes youth and even adults can get caught up in the party atmosphere and not realize how much they are drinking until they are completely hammered.