I recently got a great rate for Thanksgiving week by booking with the Allears10 code. You may want to try asking for that, and see if anything is available for the time you'll be there.
Last year we booked using the "Entertainment" rate. You just need to show the current entertainment book (or the card that comes with it) when you check in. That was a pretty good discount, too.
The people in reservations are really good about looking for the best available rate, too.