The reward code is Q3FN. How exactly do they work when tagged onto a longer booking? I'm thinking of booking a couple of nights in a suite; will that voucher get me an extra night in the suite or must I move to a standard room? What if I only book a single night in the suite? Will that be enough for the voucher to count against an extra night in the suite? Is this something that can be left to hotel discretion or done at the time of booking? And finally, I guess such a booking must be done by phone? Thanks!