Upon searching there are no threads on this program in general. Only on occasional promos and on the BRG scheme.

You can exchange your points for hotel coupons at these rates;

50$ 7000 points
100$ 13000
150$ 18000
200$ 20000
250$ 25000
300$ 29000
400$ 37000
500$ 44000
600$ 46000
700$ 47000
800$ 48000
900$ 49000
1000$ 50000

My first question is whether you get the coupon back if you cancel?
(Takes a while to build the best coupon, 1000$, and if not refunded it would be terrible)
As this is not the case with the 50$ BRG coupons. Also for both types, any value of the coupon unused for the booking you make will be void.