Hilton Honors.com is offering Hilton Honors Members: Earn Double Points for Free when you register for their ‘Double Up Points’ promotion
& complete a stay at any participating hotel or resort within the Hilton Portfolio from September 1 through December 31, 2017.
Note, offer valid only for Hilton Honors Members.

http://hiltonhonors3.hilton.com/en/index.html?WT.mc_id=zLADA0WW1…