Hey guy's

I go to a guys school and we are having a formal next Tuesday night ( year 12's) and because we are guys and we really couldn't be stuffed organizing anything earlier, we don't have a fixed location to have a post formal 'function'. I was wondering if anyone could recommend anywhere that we could hire out or anything. We are looking at about 400 people total and we have a rough price range of $1000.

Cheers guys