OK. so I thought about it.
There is a solution. I can get 160 sheets of 8' x 4' white-coated corrugated cardboard delivered which can quickly be ducttaped into 40 U-shaped 'booths' each offering 8' x 16' feet of vertical display service and be self supporting.
cost 698.00 dollars =about 17.50 per table.
I have no way to pay for this, BUT if someone here wants to deal with getting me the money and getting re-imbursed from attendees I WILL order the shit and assemble the booths.
your call. You have 1 week to decide.