Rewarding Getaways: Earn 6 extra Hilton HHonors™ Bonus Points when you stay 20 Nov 13 - 28 Feb 14. You must register your Amex HH card before paying with it to earn the extra 6 pts/$. http://hhonors3.hilton.com/en/offers/100055140.htm Not sure why I haven't seen this till now. Anyway, I highly recommend clicking through to the list of participating hotels as that is where I lose interest, but hey, maybe your hotels are in there. For comparison purposes--the HH Surpass normally earns 12 HH/$, the Citi HH Reserve 10 HH/$ and the HH Amex NAF 6 HH/$. So with this bonus the NAF would earn 12 and the Surpass would earn 18... At 18 HH/$ that's about 7% return by my calculations which is pretty good! Of course YMMV.