I found the card yesterday, requested "no service" and then hung it on my door prior to 2AM... the next morning, the card was gone, but nothing was under my door.
I talked to the front desk, and they said there was no such program that offered 500 points or $5 for declining housekeeping...
Can anyone validate that the Sheraton Cavalier Saskatoon isn't participating? Is there a list of participating hotels?