Originally Posted by
PayItForward
The last round, it was supposed to be stays within the promotion period but you have to be targeted. Unfortunately, I cannot tell for sure as my stays did not qualify. You do need someone targeted and stayed. But this promo might not be the same as last promo too. Best is to call / email and ask.
I don't trust Hilton's response any more than someone on here since they are often clueless about the details as well
It's only the programmers who really know what the system is going to trigger/credit.