@Marianne18 Saw that your question has been languishing here for a while. I don't think anyone here can answer that. Perhaps you could consult with a wedding planner to get an idea of what to charge? For sure you would need to incorporate enough in your price to cover clean up, damage and wear and tear on your property. Also, I would consult with your homeowners insurance to be sure you are covered for an event like this. How many people will there be? Do you have enough bathrooms to handle all the people?
Since the people attending the party are not "guests" in the sense Airbnb uses the term, you wouldn't, I would think, be covered under it's normal host guarantees. Hosting a wedding party is really outside the Airbnb universe so you need to be careful and be sure your bases are all covered.
Not to be negative, but I think you are opening up yourself to potential liability hosting a wedding at your place. Will alcohol be served? What if someone gets into an accident, could you be held liable? Are you prepared for drunk and disorderly people? There have been many stories in the press with people using Airbnb listings for parties and left them trashed.
These are all things you need to consider and decide whether the potential income is worth it. You have a lovely place....I would stick to normal hosting and leave the parties to other venues where they know what they're doing.
Good luck! I would really like to know what you decide. You can message me back by adding @ in front of my name.