A friend is thinking about going on a Disney cruise. She asked me if she were to book a cruise for 2 and then a 3rd person decide to go if she could add that person to their room and pay the extra of course. I have been to Disney World 15 times but I haven't been on a Disney cruise. My first reaction is that I don't think it would be a problem to add a person but then again the deposit requirements, cancellation policies etc. are different for DCL than WDW so I don't want to tell her the wrong thing.