We cruised in October with our 14 year old daughter who had a blast with the circle C. There were several kids her age and she made some good friends. They had a ton of activities for them to do. They play miniature golf, hide and seek in the theater, laser tag, several different themed partiesand a lot more. There were a few nights we didn't see her from lunch time until dinner and then she left again after dinner until late at night. So your stepdaughter should have a very good time with the other kids.