I have the military/veteran discount/plan and had a message for an exclusive offer.
Message on my account stating:
To show our thanks for your service, we're offering 25 percent off your accessory purchase. Sign in to myATT to get this limited-time offer. Ends 5/31/19. Restrictions apply.
Was able to add Airpods to my cart and check out with 25% off discount. See attached photo.