I would love it if someone could organize a large group (1000 +) to attend one single hall for a couple of years so that by the third year the conned-green-nation would feel the need to rent a place; then inform everyone in on the gag not to show up that year.
Three good thing would come of this, first they would look like fools, second they will have "wasted" money on a local venue and third this will help the local economy instead of lining wash-towels pockets (where the money would have been set).