There is a real lack of transparency are around how 118 apply future cruise credits (FCC). We were given one figure for the FCC (from 118) to be deducted, or so we thought, from the total price, leaving the balance to pay which we did. As soon as we paid the balance, leaving nothing more to pay, there was an "issue" with the amount of the FCC that could be used. Apparently not all of the FCC could be used to reduce the balance, with various issues raised from flights to taxes etc and the "unusable" part was unable to be carried forward - it just sort of disappeared, never to be seen again. The bottom line is that we had to stump at further £422 or 118 would cancel cruise. Sought clarity and none was provided. Raised a complaint and got a single sentence reply that suggested that they had not even read or understood the issues, or there was just complete disdain for our issue, and that they just needed to close the case. Lack of transparency, sharp practice, the dark arts, or call what you will but if you get a FCC, make sure you ask them, (and even better get it in writing) how much of that is actually able to be used against your next/future booking. Despite FCC being a fixed amount - all is not what is seems.