Should I consider small weddings at property? Advice needed.

We have a nice place on a lake, sleeps 12, with a big yard that we rent out through Airbnb and VRBO. Every year I get a few requests to host weddings and always say no - because all the things (we don't allow parties, drunk people, worry people will turn into bride/groom zilla as wedding approaches, etc)

But I've gotten two requests recently that I'm considering. Both say they will keep the wedding itself to ~20 guests with 12 guests or less spending the night. Both are 5+ day stays during seasons when we typically only book weekends. They both swear they will be mellow, low key affairs.

Any advice on how to do this right so I don't regret it? Or advice not to do it all? We have an umbrella policy for our STR - but does this leave us exposed?