Okay, so it's a fictional TV show about a fictional amusement park with fictional characters. But it's a really cool show, and one that has the tendency to make lawyers yell at the screen. Even in a fictional world where characters are told there are no laws, viewers may wonder how legal liability might play out in real life.
Well, HBO knows their audience well. A quick Google search will bring you to a Westworld website designed to make the TV show look real. In fact, the site even has the "Terms of Delos Destinations" as a linkable document that you can read. Apparently, if you read through the terms, the guests in Westworld are asked to waive their rights to pursue claims against the amusement park specifically in the event of dismemberment.