I actually have a HH grand villa reservation for this Feb. 14 - 21. I was going to use all points for it, but surprisingly, the first and last nights were only available through cash. So we're using points for the weeknights and are paying cash for the 2 weekend nights with the member discount. I know some members always like to do this, but it just kind of happened for us. Member Services was surprised that the availability was only available on cash for those 2 nights, but it worked out just fine.
Something interesting that I did find out is that there are always a certain number of rooms available for cash at HH. It is a law in South Carolina. The Grand Villa surprised me though. Another thing that I have found in the past is that the member discount on rooms has usually been available earlier rather than closer to the reservation dates. At least in HH. It's the only place I've ever paid cash for any part of my reservation. They offer the discount until a certain percentage of rooms are booked and then they stop offering it. You can sometimes still pay cash at that point, but no member discount.