Star-gazing is a quiet, peaceful activity. Don't set up too close to another observer. If you're a visitor or a newbie, try not to monopolize another person's time. The astronomers are there to enjoy the sky, not to give lessons. Be especially careful of wires on the ground.
Some scopes require power and some folks use their car's battery.
If your scope requires power try to make the wires as safe as possible. If you bring your pet make sure it is firmly under control. Just remember that music that you love may be extremely irratating to others. When in doubt use a headset. And be aware that alcohol may adversely affect your night vision, body temperature and ability to drive home.