Which room type should I be looking for to use a free night cert? Only "Fairmont", or is "Fairmont Mountain View" also eligible for a free night? If only the lake view room is available, can I use a free night cert and pay the cash value difference between the fairmont room and the lake view room, in effect making this a "cash and cert" booking?

Edited to add: I called and they confirmed that the free night cert can be used for a Fairmont room or a Fairmont Mountain View room. Not the lake view room.