It looks like the AARP portal now takes you to a page that offers the "Senior Rate". I know there are various explanations*, but, at the Quality Inn where I stayed most frequently (pre points devaluation and in the days when the promos were 2-stays-for-8,000 pts., or 3-stays-for 14,000 pts.), for the fall this rate is down below what the 60+ rate was when it existed.
* Where I stayed last winter, all the hotels were discounting at least 20% below their Directory listings. Perhaps again?