Well, I was going to post my comments on the discussion started by brightlybob, but that was not possible at the time I created this thread. The entire discussion was unavailable. Happily it has now returned.
In any case, here are the details of my Unlock More promotion.
Offer unlocked: Now complete six stays to earn 15,000 additional bonus points.
Given what I recall from the previous discussion, that seems like one of the better offers.