Your listings are lovely, but I gather you are concerned about the entire house. You do have a rule about under 25 years old supervision, but since the age of majority is 21 what do you do about about groups of 21 to 25 years old? I think you might want to rethink the rule and address the issue of non competent persons left unsupervised. That could be wider range of ages and conditions. Once you have established a rapport with the booking guest, it is easier to address special issues directly. Any complaints from you must be backed up with rule breaking and/or damages. Air BNB is SO overwhelmed at this time, it is best you figure out how to address this situation as a business owner and not rely on Air BNB unless you decide to cancel. Good luck!!