Get a good night’s sleep. Exhibition halls are often open for seven hours at a stretch. That’s seven hours on your feet, smiling and talking to people. Eight hours of sleep will help you fight off fatigue.
Stay hydrated. That means water, not soda-pop, energy drinks, coffee, etc.!
Take breaks. Schedule a series of breaks so your booth staff doesn’t burn out. Only allow them to use personal electronics during break.
Keep it clean. Wash your hands with soap and water, or hand sanitizer frequently.
Look the part. Dress comfortably yet professionally. Don’t wear clothes you have to keep adjusting and don’t be too casual. Do yourself a favor and wear comfortable shoes.