rsjj,
I tried to book onboard this past week for the summer of 2005. No problem doing the booking for another date, and switching once the dates open up. But Donna the onboard booking agent told me "most likely" I would not be able to carry over the discount or the onboard credit for those dates. The discount offers are "only" for the current Eastern and Western sailings, not for any potential special sailings during the summer. She also told me that the bookings will not open up until summer of 2004. Needless to say, I did not book onboard, why if it would save me nothing. They would just have my deposit longer.
(not so patiently waiting)
Robin