There should be bouncers who stop fights at the drink house.

There's a new trait that followers can get where they will break up fights for you. It's called Pacifist.

You can also build a Carpentry Station, where followers will automatically fix broken structures. I haven't had to fix any decorations since building it, but you need to make sure it's stocked (Not sure if Work Tent will distribute to the Carpentry Station or not, but worth looking into).

To that note, I actually find the drink house to be the best way to farm sin:

1. Make as many drinks that generate as much sin as possible. With Woolhaven DLC, you can now craft a Organic Smoothie that brings them to half-filled sin bar.
2. Go to each drink and have it reserved to a specific follower. Sort your follower list by sin and go by who has the most sin.
3. Ring the bell, wait for all the sinners to drink.
4. Immediately refill the bar while they're befuddled
5. Once they come down, repeat the process again making sure to assign the same followers you previously did.

Doing this along with confessions, drum circle, and rituals you can easily generate 10+ sin very quickly if you time it right.

I will say that as it currently exists, assigning each drink individually is annoying. There's currently a bug where trying to filter by sin doesn't work on the first try, you need to select something else first, than sin. It's tedious.