Nope, you didn't miss any great specials! There just haven't been any.
I have been reading these boards for a while and I'm so glad I didn't wait until right before the trip to book our rental car. Everyone says it is so much cheaper right before, but it seems that rates are generally high and the pattern of last minute discounts doesn't apply right now.
I rented a car at Orlando International a few weeks ago and there were never any last minute discounts. I got the best rate about 2 month ahead of time. For our December trip (same dates as yours) I've been watching rates daily for 2 months. I have rebooked several times since my initial booking, but I got the best rate on 10/17. Mid-size from Advantage for $96 including all fees and taxes. Haven't seen anything even close to that since.
By the way, I rented from Advantage 2 weeks ago and had NO problems. Good, quick service, and they gave me a larger car than what I booked. Hoping for the same in December!