Do I misunderstand how this is supposed to work?
I understood that it could be used monthly. Once it was redeemed, a similar voucher could be had from Silver Sevens kiosks each subsequent month through the end of the year.
Having successfully redeemed the coupon in August, I attempted to receive a September voucher tonight. It was not there. When I asked at the casino cage/promotions desk, manager "Flowers" said both that their accountant would look into it, and that the problem was due to a kiosk update.
I don't know what to make of those responses, but I wasn't able to use this MRB coupon as I was expecting.