Based on their advertising piece, I expect free nights "anywhere" and that it has already began. We all should hold their feet to the fire on this.
Their Delta ad wasn't a "oops" moment where someone put out the wrong info in a quick memo. The ad will be alive for the entire month and seems clear that the redeemed certs will be good at all HH properties and that the program started Jan. 1.
I will have my first night earned before the 15th.