I tried NPR for a Residence Inn. It gave me a cheaper rate than AAA, but under the rate rules it says: "VIP Athletic Rate: Valid Card Holding Members. . ." The ENT code on a separate search for this hotel wouldn't work.
I remember Socrates cautioning us not to book VIP rates. I am puzzled and wonder if anyone has an opinion on this one please. BTW, I booked the AAA rate.