At some point in your life, I think that you just need to give up partying every night, especially if it affects your job. Liza Minelli was supposed to perform Thursday night, but couldn't because she was hammered. Now, if you are too drunk to perform, here is a piece of advice. Do not get up on stage and try to perform. Do not even go to the event. Just call in sick. If you show up and get on stage and can't remember the words to new York New York which you have sung thousands of times and can't even stand up without the aid of something or someone and the crowd starts to boo, then perhaps Liza will not be doing this again for quite sometime. Another note to performers. Try and ban people from bringing cell phone cameras.