There's an arena in Port Sacrifice that's used for training by the city soldiers. Once a week, they host Amateur Night, where civilians are encouraged to fight against the best and boldest of the soldiers. There's also the Weekly Invitational, where select civilians are invited to try The Ladder - a civilian starts with a single enemy combatant and, if successful, moves on to a second tougher one. When all single opponents have been defeated, they move on to 1v2, 1v3, 1v4, etc. Nobody has ever made it past 1v5.
There's a fighting pit in Watertown owned and operated by a group of contract mercenaries/bounty hunters that's open to the public and used to recruit the best. The pit is usually running three days a week.
There's an arena in Ahl-Jhian, shared by several groups, that is open 6 days a week. (They need a day for scubbing out the blood and sweeping out the loose teeth) and is, for the most part, open to anyone. THere are some restrictions, based on whhat group has the arena that day.
In general, life in Khadask is harsh and often brutal and depressing, and there are two travelling circuses. They end up trading performers and helping each other out with info on where best to stay, what to look out for, ideas for adding stops, etc. They work well together, and the people are always glad to see them roll into town. They definitely have monks.
Hope the info is of use! I'd be happy to see any of those characters!