I have never had a problem getting an AP rate, but at times, I've had to be flexible about where I'm going to stay. For example, one year, I wanted to stay at the POR or POFQ, and I could only get AP rates at the CBR, so I stayed at the CBR. I tried calling every few days to get an AP rate for the POFQ or POR, but never could.
So, if you can be flexible about where you are staying, if AP rates are available for your timeframe, you should be OK. Just watch these boards for an announcement about AP rates, and book them the day they come out. You'll have to split it into two ressies to get it, though, as there is a 10 night limit (or maybe it's nine nights).
Karen