My school took us on a trip to a brewery, coinciding neatly with when the free bar was closed.
They failed to organise a piss up in a brewery.
I'd say the important thing is that everyone/the majority get pissed, which would depend on individual tolerances.
( my other username is a porsche , posting shit pictures so you don't have to, Wed 27 May 2009, 21:28, archived)