Casually elegant means casual, but no jeans or shorts. Khaki's and sport shirts are ok, and slacks or casual skirts for woman. I think the Ryndam is going into drydock this month for some refurbishing, I'm sure she will be fine. She's a small intimate ship, and they take good care of her. I haven't been on her in three years, but she was a very nice ship then. Have a great time!