On Chernarus the Wall decides how a fight is allowed to start. Sakhal has no Wall either, and it goes the other way from Nasdara: everywhere on this island you play by the rules that hold south of the concrete on Chernarus. There are no red pockets here, the naval base included.
Everything else in the server rules applies here exactly as it does there: roleplay, base building, raiding, storage and group limits. Only the parts about the Wall itself stay behind.
An initiation is not a formality. A demand the other side can hear gives them a choice, and that choice is where the stories on Settlers start.
Read the full rules