Ok, Randymon, you got us...we booked at CTI for March 2013. Third time will be a charm, I'm sure--mostly because the first and second were charming as well! I've got my countdown going. Can you shed some insight into why the promotion would end early?
It looks like the promotion is still available, if anyone is wondering.
I looked today and could book our exact same trip at the same price, and still get the $300 in resort credits (as well as more credit/7th night free, if your trip is during the window that offers the extra incentives. Ours doesn't!).