Thanks for the feedback. I will pass on the advice to her.
When I told her previously that she could not be on Serenity, she said, "I don't get to have any fun (meaning, be allowed there)". She also said, "I traveled all over Europe last summer, and was allowed to drink, but I can't drink on the ship because I'm only 18. I'm not one of these out of control persons. I'm responsible Dad!". I have a 21 yr old (son) that acts 15, and an 18 yr old (daughter) that acts mid 21 (and looks it). Might have to keep an eye on the boys, when she sports her bikinis.