Although I am certain that I learned of this promotion from FlyerTalk, I cannot find the thread discussing it. Feel free to merge this thread into the thread announcing the promotion.

In short, every stay at other than Hilton Garden Inn has posted the AAdvantage bonus points as expected, and every stay at a Hilton Garden Inn has not. If you have registered for the promotion and stayed at a Hilton Garden Inn, you might want to double-check that your bonus points posted.

For anyone who is unfamiliar with the promotion, Hilton credits 500 extra AAdvantage miles to your account for each stay or night (depending on brand) if you have registered for the promotion and selected American Airlines as the recipient of your bonus points in profile.