Need everyone's expert opinion!

[Keira1387]

We rebooked a 4 day cruise for April '09 while on the wonder in August. So we received the 10% discount and the OBC. I know we are going to book a special cruise (i.e. Alaska, Repostioning, or Europe depending on what DCL offers) for 2010 as soon as the bookings open. Here's the question:
Should I rebook the 4 day at full price and transfer the OBC and 10% discount for whatever we book in 2010? I know it will be longer than a 4 day so it might be better use of the discount. TIA!