Originally Posted by
ethernal
I honestly don't know how this benefit works (the wording is so poor that it makes it unclear as to exactly when it would work and what context) - but there is a "room type guarantee" that entitles you to compensation. You may try saying "upgrade me to a suite or give me the room guarantee compensation" (which I believe is paid to you and not deducted out of the room rate).
Not sure the guarantee applies with advance notice. MR is good about providing plenty of wiggle room in their terms that it's not difficult for them to get out of just about everything.