So being a fan of the books I heard that the characters appear in Altdorf so before I logged last night I scourded every pub in Altdorf to no avail but one of them (The screaming cat or something) was closed.
Anyway finally found out it doesnt open up until the city gets higher ranked and the characters appear at Rank 5 for the city. They then dish out quests supposedly. However one other site said they were in the Mastiff but as the other place was closed it makes more sense that they'll be in there when it opens up.
I'm assuming the city rank goes up based on which side is winning the overall RVR.