Session Zero
That works, Van would have been very eager to get out of Fax. If you've read about Fax, its likely if Dirk passed through there he would not have stayed long, on fear of getting his throat slit or sold to a slaver. Vandilo although raised very Xenophobic, that is the reason why he is not traveling/living with his family anymore, and has ventured off on his own. Because of not being as close minded as the rest of his people. Even though people still see him that way, at least until they learn more about him.
As seen below, Fax was a pretty rough place. Maybe Dirk had traveled through Fax and Vandilo had to help him out of a bind, the two met, got along and it was a chance for Van to leave Fax, that push that he needed.
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Fax
Population: 15,000
Fax is a broiling, boiling, oozing sore on the face of Flanaess. It is a pirates' den, for slavers, raiders, and smugglers. Hundreds of taverns and brothels cram the ill-conceived, ramshackle streets and alleys. There is no law or order to speak of. There is an old pirate by the name of Captain Skulljack who is the official leader of the town, but as he is fond of saying with a jack of rum in his fist, "…wear a sword, cuz anything goes." Fax has a deepwater harbor that caters to dregs and pirates of any kind, from all over the Flanaess. The bay is actually a great place for merchants of strong stomach and stout heart to unload their goods, legal or illegal, because Captain Skulljack has no organized system of taxation. Whenever he deems the city needs something, he takes up a collection from ruffians and pirates, or goes off raiding coastal towns.