How can they monitor a drunk in their room:
* NCL encourages the responsible use of alcohol and accordingly reserves the right to permanently or temporarily revoke the drinking privileges of any guest who violates NCL’s Guest Code of Conduct or who is deemed a danger to himself, herself or others by vessel management. Continued abuse of alcohol while sailing and/or violation of NCL’s alcohol policy may result in immediate disembarkation.
Well there ya go. She was immediately disembarked!
Since many of the cruises are nothing more than big drunken parties I doubt if they ever cut off anyone’s alcohol. Besides, booze is the big money maker for them.