"Was it something I said?"
You're at the tradeshow, talking it up with someone who asks you questions about your product or service. You answer the question and he or she immediately turns away with not so much as a thank you. You choke it up as being that one person but then it happens again to you - two, three, even four times. "Was it something I said?"
Know Your Audience.
That is the one phrase that got me through college as well as a handful of jobs I've held. That is, know who is going to be at the tradeshow. Will they be experts in your field? Will they be in the industry already? The best way to do this is to research the tradeshow you plan on attending as well as coming up with a list of questions (and answers) that you believe will be asked at the tradeshow. There is nothing people hate more than someone who is illprepared for a tradeshow or someone who doesn't seem interested.
We all enough to brush our teeth in the morning or to shower before heading to work but attending a tradeshow may mean keeping ahead of the curve when it comes to all this. Long hours means not taking care of your breath and lots of people means an increased indoor temperature. Be sure to have promotional mints on hand or a lightweight promotional t-shirt so you don't sweat through your promotional long sleeve dress shirt.