If I ask a "return of experience" it's only because I have been using RFM datas for a while now, and I know, as everyone in this business, that they may differ sometimes a great deal from the real thing.
It is useless to publish figures in an OPS manual, if everybody knows they are not realistic.
Crews may be tempted to disregard company's documentation as unrealiable, and it's also a troubled picture of company to show to well documented customers.
It's always interesting to know what others think about various matters and experience sharing can be very valuable.
Basically my question is to know if by experience, somebody can tell if figures of RFM on OEI on cruise reflect reality or not....knowing that reality is normally less bright than graphs on paper.