After a couple of attempts to get registered on Crack the Case, a helpful lady in the call centre added me to it yesterday and I've just received my offer this evening.
As a recently joined PC member, I think I've been rewarded with a pretty easy option, not that I'm complaining about it. I signed up for the Sweet Dilemma promo for free nights, so the two promotions pretty much have the same targets. I've been set:
Take a survey - 500 points
Stay 10 room nights - 5,600 points
Stay at 2 brands - 4,400 points (already done)
Stay 2 Saturdays - 3,300 points
Bonus for unlocking all 4 - 80,000 points
Total 93,800 points
Pretty happy with that one ^