Your the resident expert on dishing out blather and when it comes to working one's self into a lather, no one does it better than you. Advance(medical) directives(which are most certainly NOT always carried out)  and signing away rights to sue before hand are two totally different animals. It's a myth that you can't sue if you signed a waiver to give up that right. Better place that call to motley, before your lather light goes on.