Yes, but the attitude of the staff was not very nice, and the Marriott Customer Care associate also ignored my escalation request. It took me quite a few emails/phone calls to get it solved. I hope more fellow members aware of this benefit and don't get mislead by the hotel anymore, and give the hotel some punishment for not following Marriott's policies.
My biggest complaint about Marriott's whole guarantee is that they do not provide explicit instructions for filing a claim. Thank you for the update, and hopefully they fix the issue at Cosmopolitan! The whole ridiculousness of the situation is further compounded by the fact that they do offer free breakfast for FHR and Virtuouso, so it isn't like they don't have procedures in place.