This is awesome, since I've got a ton of old books that are criminally underused, and WEG's d6 system is an elegant game from a more civilized time.
This is less than awesome since I haven't run it since high school (almost half my life ago), and haven't looked at the books in a decade!
I start by pulling up the REUP PDF (you know about this, right?) and printing off the character templates. Then I skim through the basic mechanics, make a few notes about difficulty, and then flip over to some of the other books I've got for an adventure idea. What books?
Secrets of the Sisar Run
Flashpoint! Brak Sector
Fragments from the Rom
Best of the Star Wars Adventure Journal issues 1-4
When my players arrived, I had them go through the stack of pre-gens, and this is what they picked and their thumbnail backgrounds. They came up with all this completely on their own. It's so great when your players basically do all the work for you!
Teyla, Minor Jedi, daughter of a moderately influential crime lord (Hanna)
21B-Em-Dee, medical droid, tasked to monitor Teyla by the crime lord (Allison)
Takata, Smuggler, owner of the Decade Pigeon (YT-1300) in debt to the crime lord (Erik)
TeeTee'ee, ship's engineer/tinkerer (Nadia)
On a spice run for Teyla's crime lord dad, they run into engine problems. The hyperdrive basically blows up, dropping them into a small system with a single rocky planet that's the completely under operation of the Lant Mining Corporation. The planet signals the Decade Pigeon, asking if they need assistance, and tells them to "land wherever, just don't hit anything."
One botched landing roll has the Decade Pigeon sideswiping a cargo hauler before bouncing off and crashing hard. Takata is taken into custody, while the rest of the crew is brought in for questioning. Thankfully
After about a day of begging, cajoling, and using her feminine wiles Takata manages to get the guards to let her out, since there isn't anywhere for her to go. The entire planet has a single settlement, and her ship is busted. Takata makes her way to the administrator's office where Teyla is making use of her underworld connections to try to smooth things over. Once the administrator looks up her dad's name (not knowing it's her dad) he decides that blaming it on some little tramp ship vs blaming it on some mobsters who were looking for an ex-worker and ransacked the place when they couldn't find him seemed the better option when explaining this to his boss.
Meanwhile TeeTee'ee managed to find zimself a former planet worker at the factory where YT-1300s were made who's interested in helping out with the repairs. Ze even finds an old hyperdrive that will get them where they need to go, even if it isn't as fast as they're used to. After a fair amount of work, everything gets fixed, patched, or otherwise made to work, and they get on their way. Days later they arrive in the Canara system, manage to avoid the overworked Imperial Customs ships and made the delivery.
While hanging out waiting on their next assignment they file a warranty claim on the hyperdrive that broke. A rather amazing bureaucracy roll led to the manufacturer replacing it free of charge and also throwing in a new paint job, and installing the replacement drive they picked up at the mining colony as a backup drive! Full work would take about a week, so the party went out on the town. Teyla and 21B-Em-Dee went out shopping, TeeTee'ee went hunting for some new tech to play with, and Takata went looking for trouble and ended up in a Rodian bar, stirring up anti-Imperial feelings.
TeeTee'ee didn't have much luck finding anything snazzy worth picking up except a music player with some new tunes. Teyla had fun window shopping and then went for an expensive dinner where she met a tall dark stranger by the name of Cass who joined her for dessert and drinks before 21B-Em-Dee dragged her away before anything could happen. Checking in over the com, Takata was leading a protest outside the Imperial compound which was put down by Imperial troops. Takata got away but spent the night on the streets hiding in alleyways.