OK, so I've read about re-booking a cruise onboard and you save 10% and get some OBC, correct? How much is the OBC for booking onboard? Are there any other benefits to rebooking onboard? The cruise I want to look at rebooking is already more than 10% more than what we paid for it, so chances are, we're NOT going to want to rebook, right?! Is there any reason to rebook onboard if our same cabin type is already going at more than 10% more than what we paid?!