I would say that if you continue to book outside venues that do not belong to you (i.e. when you aren't jobbed in and it's simply self-produced) you must have said venue sign a contract so that you do not find yourself in the same situation. A venue should not be able to cancel on you with less than 48 hours notice (what if you were traveling across the country? I know you weren't but that shouldn't matter) without some sort of compensation for your company 1/2, 1/3, 1/4 I don't know, that's your decision. (you may already do this, I don't really know, I'm coming at the situation more blind than not) The fact is, his venue could have been meticulously incorporated into your entire operating budget (not to mention you and your actors personal financial situation). You must start to demand accountability from those whom hire you out in order to fully establish your company as more than just a semi-professional/community theater group. (again, if you already do this, awesome, I'm just throwing things out) I know you want more from LS/GDP than a few clients here and there, and the only way to do that is to demand excellence from your company and those that hire you. I think you absolutely did the right thing by calling your actors immediately. Most theater folks here work multiple jobs on top of acting professionally (unless of course they are off Broadway or Broadway) so people's calls are usually posted a week in advance so that they have enough time to get off of work, if they can be freed they are with 24 hours notice. You did exactly what should have been done in this situation. Clearly the business owner lacks an understanding of what actors do and the necessity for them to be available for other theater jobs or their own shifts or an emergency rehearsal or, god forbid, sleep. That's my take. No idea if that helps you or not, but I would have called quickly as well.