&gt; The contract could have fines for breaking this rule<p>Small legal point.  Contracts are not allowed to impose fines.  They can cite liquidated damages (what most people see as a fine) but they have to be rationally related to the damage done by the activity described.  They cannot be arbitrary or elevated simply to deter unwanted behavior.  Yes, this is and issue when it comes to &quot;parking tickets&quot; on private property.<p>500$ fee to accommodate a cleaning crew = 0k.<p>5,000$ fine for pain and suffering caused by naked people in someone&#x27;s home = not enforceable.