Rather than going into the exhibit hall, most business people hop onto their phones when the conference educational sessions break. If you're waiting for people to stroll down the aisle "shopping," you will be very, very disappointed.
So… don't blame the show organization if exhibit traffic is slow - their role is to get attendees to conference... not to your booth. That's your marketing department's role. What have they done PRE-SHOW to entice prospects? That is essential.
Give attendees a BUSINESS reason to visit you.