Want to keep the bar tab down (and keep attendees focused the next day)? Hold the salty hors d'oeuvres and snacks, recommends Susan Friedmann, CSP, The Tradeshow Coach (thetradeshowcoach.com). Replace potato chips and nuts on the bar with low-salt munchies. And ask the venue to prepare low-sodium hors d'oeuvres. This way, attendees won't be drinking just because they're thirsty.