This is a courtesy to earlier arrivals whose eyes have adapted to the dark. Use your headlights if you must, but keep their use to a minimum if possible. Flashlights with red filters over the lenses are least offensive and much appreciated by star party participants. Turn it off when not needed, and when in use cover the lens with your fingers, letting only minimum light shine through. The MAS prefers that you do not bring pets with you to the observatory or star party location for the safety of your pet and the safety of participants' fragile astronomical equipment.
Children are welcome when accompanied by a responsible adult.
However, consider that young children can quickly become bored when outside on a dark night. Mosquitoes and other bugs are common at the observatory and at star parties. Dress for cooler than expected weather, removing layers of clothing if necessary. Star party participants are of all ages and backgrounds. Individuals exhibiting inappropriate behavior may be asked to leave.