Hope this helps an extract reply to a passenger from P & O "we will reimburse the current sea fuel supplements to customers for 2008 and 2009 cruises, but have established specififc guidelines. These are "For 2008 and 2009 departures, if the price of light sweet crude oil, according to the New York Mercantile Exchange Index, is $70 per barrel or less at the 2.30 pm close of business, as reported by Reuters on each of the 25 consecutive trading days, ending 5 trading days prior to the guests' cruise departure date, the fuel supplement will be refunded in the form of an on board credit." now I am sure you are glad you read that !! but I think it means you get an onbard credit how much will depend on the interpretation of this wording.