Don't "walk" on other entertainers, musical group, living history educators. What I mean by this statement is if you see someone interacting with the public don't interrupt or attempt to out do the other performer. If you see a group doing some music don't start drunkenly braying or yelling across a field to a shipmate. We can be polite pirates.
I was interacting with a family about a year back. They had a mix of kids, some grade school and others middle school. My mates and I asked them if they wanted to join the crew. As an interactive bit we always carry a small chest of items for kids. We give out coins, shells, beads, and such to potential recruits. This is great for grade school kids but the older kids often think it isn't cool to want a shell or a bead. The older girls were more interested in the Jonas Brothers rather than attend a pirate event with the family. We almost had them convinced to take a piece of treasure when a another pirate crew showed up and interrupted. This secondary pirate crew was loudly boasting and attempting to steal the show by insulting us. The parents looked confused and the kids didn't know what to think. Rather than add to the conflict and chaos we just walked away. It left a bad taste in my mouth.
Being a pirate doesn't mean being rude to attendees or fellow cast.