<p>I am not a lawyer but I simply do not understand how one adult could bring a suit against someone for an injury to another adult. At any rate I would be wary of assuming responsibility for a rental that was to be used by a group of young adults. If they damage the property the person that rented the house will be held responsible for any damage to the house. Since the majority of the party goers are going to be 18 most of them have little in assets to cover any damage and their parents are not legally responsible for paying for any damage that they do.</p>
<p>I hope that I am just being a worrier though and that the OP has fun and the party is uneventful.</p>