Originally Posted by
GoPhils
Actually, the hotel does specifically prohibit marijuana:
https://www.cosmopolitanlasvegas.com/faqs
Oddly enough, the mention that "smoking is prohibited in guest rooms" (but doesn't mention balconies on the official website) is included under a FAQ about marijuana. And in typical vague Marriott fashion, it's hard to determine if the "fines" they speak of are just referring to smoking, or also about possessing marijuana.
Is marijuana legal in Nevada? The website looks to have an outdated policy because it says "and other illegal drugs."
I would say banning marijuana for medicinal purposes may end up going to court someday. Marijuana in that case is basically medication.