I know I should understand this, but it's kind of confusing. I am a Platinum member and booked a b2b Dream cruise in Oct of 2011. ( I did this on-line not on board) I am sailing this September and would like to re-book and get the incentives of re-booking on board. Can I do that for the same date I already have reserved? Will I be able to get the on-board credits for re-booking?