Keep watching the AP rate program. I had a reservation with the AAA discount and the difference beween that and the best rate program was very small so I decided not to change. I checked back about 3 weeks later and the best rates had dropped to be about $15 dollars a night less at CBR and $30 dollars a night less at GF. At that point it became worth it to me to change. Like you I questioned whether the couple of dollars difference was worth the hassle.