Good morning. Welcome to Just Answer. I can understand your fury about this. it is probably no consolation to know that a member of the pop group Westlife has been in the press about the same issue. He refused to fly and went to another airline but sadly most of us do not have the means to do that. The fact is that if the terms are clear on the website when the flight was booked there is probably nothing you can do about this. If your sister in law had bought the ticket in the UK then it just possible that a complaint could be made to the office of fair trading that Ryanair's terms contravene the unfair contract terms in consumer contracts regulations. You could try filing a complaint with them ( see here http://www.oft.gov.uk/about-the-oft/legal-powers/legal/unfair-terms/oft-powers#.Ua76QJXTSXY) or with your local trading standards office. Your sister in law could also see if she can make a similar complaint in Ireland. The unfair terms in consumer contracts regulations follow an EU directive so it is possible your sister in law could think about suing there but to be completely honest infuriating thought this is , you can guarantee that Ryan air will defend any proceedings and make life very difficult for any claimant so it would be very expensive to take them on. It is better I think to try complaining to trading standards and to write to the press rather than get involved in expensive litigation.