If you want to host weddings I would suggest you set up your own website and social media to promote this type of service @Julie5416 . You will need your own contract and to invest in marketing and advertising to promote the service.
Airbnb is not a suitable platform to use for weddings or parties.
You would need to check in your location to see what sort of rules and regulations you may need to meet. You would need liability insurance at a minimum.