I'm 3 out of 4 radisson BRGs in the past week. Never stayed there before but am taking advantage of the AA promotion for 7500 miles, so booked 2 stays each for me and the wife. The only one that was denied was because the rate had changed on the OTA. However, I did have to cancel and submit multiple times. Make sure you get the acknowledgement of submission email, otherwise, it didn't go thru