Your accent, mannerisms, figures of speech, and perhaps even your appearance all mark you as foreign. Curious glances are directed your way wherever you go, which can be a nuisance, but you also gain the friendly interest of scholars and others intrigued by far-off lands, to say nothing of everyday folk who are eager to hear stories of your homeland.
You can parley this attention into access to people and places you might not otherwise have, for you and your traveling companions. Noble lords, scholars, and merchant princes, to name a few, might be interested in hearing about your distant homeland and people.
You know the secret patterns and flow to cities and can find passages through the urban sprawl that others would miss. When you are not in combat, you (and companions you lead) can travel between any two locations in the city twice as fast as your speed would normally allow.