Welcome back Linda!
You may want to get in the habit that we (and lots of others here) are in. We ALWAYS book something while onboard. We usually pick something cheap as close to a year away as possible just so we have the onboard booking in place. We've never taken one of the cruises we booked onboard but have always been thankful we had it so when something good did come up (like MUSH) Ngaire just transfers it over and we're all set! Afterall, when you're not in the penalty stage you're not putting any $$ at risk.