Mirrors in the Desert
Your characters are level 7, so while they know the rules of Athas (“Guard yourself and guard your water”) and details of their homeland, they probably don’t know details of every city-state and region. What they do know is tainted by rumors and misinformation. So while a former Tyrian slave trader might know the details of the revolution, and details about neighboring Urik, he can only probably loosely describe Gulg, and knows absolutely nothing about Gulg’s Sorcerer-Queen beyond her name. A Balic noble probably knows the details of political intrigue, as well as who is currently Andropinis’ favorite praetor, but beyond stereotypes she knows little of the workings of elven nomadic society.