Please answer the question below being sure to use the Facts, Issue, Law and Analysis approach.

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Jeremy, a prosperous City trader, decides to pay for his parents, Bill and Irene, to go on holiday to celebrate their silver wedding anniversary. Jeremy enters into a contract with Sunset Cruises, to provide his parents with a deluxe cabin for a two-week cruise around the Caribbean. Bill and Irene are very disappointed with their holiday. As a result of a booking error by Sunset Cruises, they are not allocated a deluxe cabin. The ship's engines suffer a mechanical failure on the third day and, as a result, the ship does not visit all the islands on its scheduled itinerary.

Bill and Irene wish to take action against Sunset Cruises. Advise them.

How would your advice differ if Jeremy took action on behalf of his parents?