I have the same problem
Do you have a solution?
At the coast, where you get captured by the monks, after you escape you have to get through the northern post but the keep on asking for wine! I have gone to the bar, asked everyone for some wine and killed everyone at the northern post but I just can't get through the northern post!!!!
If anyone has an idea please let me know I'm really getting frustrated.
What you have to do is get to northern encampment, but don't kill the guards there, just ask to be let through. They'll refuse, but they'll bring their leader Don Tameo out to see you. He will give you a quest to find him a really good, expensive bottle of wine, and then he'll let you through his camp. You will find the bottle of wine back at the Inn where they sell the horses. You ask the Innkeeper if he's got any wine. He'll say yes, but he'll only give it to you, if you go collect some money that's owed him by a guy named Sabeo at the eastern village. You will have to kill Sabeo, and then his servants, and then collect Sabeo's possessions. Take the possessions back to the Innkeeper, and he'll give you the bottle. Take the bottle back to the camp and they'll let you in right away. Find Don Tameo's tent and give him the bottle, and in exchange he'll give you a full pass throughout the camp.