The players in my DnD campaign, The Heroes of Undermountain, need to penetrate the walls around Moz-r-ten, the Evil Fortress City of the Duegar Clan Rockhider. What luck, they thought, as they got behind an armored carriage entering the besieged city. They could walk right behind the carriage and follow it into the city. It was only when they got past the walls and were confronted by the heavily armed guards, that they paused to think that things may be a bit more difficult than they expected. With none of them having any decent social skills, only one of them managed to make his way into the city.