My group basically ignores ports, with the understanding being they are only there to allow you to always have a place to muster ships to contest a sea area occupied by the enemy. I'm not sure why they need to be separate areas. We believe them to be a way to prevent someone from resting a single ship in the sea and preventing all access to any naval powers. What other good is a port?
If a player leaves the land area connected to a port but still has a ship in the port do they maintain control of that area?
This popped up in a recent game where I attacked the last castle needed for my victory, won the combat but the other player played his Arianne Martell card which meant I couldn't move my troops in. The other player was forced to retreat but still had a ship in the port. What happens to it?