Especially if that blockade is small. I had an introductory adventure today, where the players started on a very remote ice planet with just a few mining colonies and less than 2000 inhabitants in total. The empire shows up and proclaims the colonies under Imperial occupation because the mining company has colluded with the rebellion. So the players steal a light freighter (guess the class! ) and try to escape. The problem was that it was pretty easy to escape.  The planet wasn't