I got switched to the Early Saver rate
Essentially what you did was to cancell the first cruise you booked and rebook another cruise. You can do this with some rates and not others. It is not allowed using Early Saver rates without penalties. But is allowed if you booked Past Guest as long as it is before final payment date.
Therefore you are currently booked with the Early Saver rate and all that goes with it. Such as a lower final payment should the price go down before final payment due date. After final payment due date should the price you'd get an OBC. But you need to check the prices and submit the form yourself. It is not done automatically.
Easy Saver Rates have a whole different set of rules.
Laissez Les Bon Temps Rouler!