The introduction of the Rebel Alliance as more than just a rumour or distant organisation is something that most EOTE groups will have to go through, especially if they plan on actually having their PCs become involved in the Galactic Civil War. Sometimes PCs will have background with the Rebels, but sometimes the group will have had no prior dealings with the Alliance.
So it begs the question: how are the GMs here planning on having their group of fringers encounter the Rebel Alliance for the first time, in a way that makes such a fateful meeting memorable and impacting on the characters? As some players see the inclusion of this organisation as a precursor to ongoing conflict with the Empire that they will be involved in , especially if they've had no dealings or encounters with the Imperials beforehand, this is a point worth discussing.
My thoughts are that smugglers and fringe personalities have probably been employed by rebel personalities to move material without Imperial forces intercepting it. This would make a natural connection between the fringe elements and the rebellion. Take a look at A.C. Crispin's Rebel Dawn book. Han Solo and other personalities and helping the rebellion.