A bit of a warning is that you must never purchase the alcohol. You must only
be performing the bartending services. If you are in charge of alcohol you
will most likely be breaking several laws in your state and would be pretty
much fucked if anything would happen to anyone.
And yes, this waiver will not hold a stick in court. You must understand
"normal person law". This would judge you and your attendees based on what a
normal person would do. Normal people consume alcohol elsewhere. Basically
the right to check ID's, right to pack up and leave (but not aleave you from
assumed risk), and the such probably are good things to have though; things
that protect you from being sued for providing bad service. You should be
getting a lawyer to do this anyhow if you plan on this being a major source of
income or even something you are doing often. I bet if you tried to get
insurance you would find that your premium would be high because you would be
assumed high risk. Just something to think about!
This is America, where beyond the lotto, the easiest way to get rich is in the
courtroom.