Do Uber take cash in Las Vegas?
The Guru Take
No, unless you negotiate with the driver directly
No, there is no cash payment option in Uber. The rides you take in Las Vegas will be charged to your credit card you have on file within the app.
That isn't to say that you couldn't negotiate directly with a driver. You can request a ride, and upon being matched with a driver, maybe you can contact the driver and explain the situation? Of course, I believe this breaks the terms set by Uber, so we do not endorse it here.
Here's a related article on cash payments. There are some markets who do support cash payments. What Uber services can I pay using cash?