제 이메일로 온 건데 프로모 그리 나쁘지 않아 보입니다.  1500 miles PER NIGHT 이니까.  프로모 기간동안 무한대랍니다. 큭. 

reminder 로, 항공 프로모 마일 받으려면 반드시 fully paid stay. 

Earn 1,500 miles each night at participating Waldorf Astoria and Conrad hotels — up to 7,500 miles per stay. Get ready to finish 2015 with thousands more miles from Hilton®. Register now and stay with Waldorf Astoria or Conrad from October 1 through December 31, 2015 and you'll earn 1,500 MileagePlus bonus award miles each night on stays of up to five nights. Then, stay again with Waldorf Astoria or Conrad and earn more bonus miles — there's no limit to the miles you can earn.*

등록은 여기서: 
https://hiltonhhonors.com/ProcessLanding/ProcessLanding/?lp=waunited
Offer valid for eligible stays booked September 21 – December 28, 2015, and completed between October 1 through December 31, 2015 ("Promotion Period"),

올해 12.31일까지 하는 Conrad & Waldorf specific promo 세 개랑 결합하시면 꽤 좋아보입니다 (2K point "per night", 5K point "per every two consecutive nights" etc.)