If you plan to boulder, be sure to have your crash pads the day before so you can head out earlier. We arrived very late in Vegas and the rental shops had closed. The next morning we wanted to get an early start but they were not open when we were heading out. We did not get crash pads and we did not boulder.
There is no cell service in the desert, so be sure to make everything you need on Mountain Project available offline. That also means that no, you will not call or text when you get there. So the friend that hung back to look for crash pads will not be able to call and meet up.
Don’t believe you brought enough food and water.
Get more. After many hours of hiking up and down the mountain side looking for reasonable sport routes, we had drank all of the water that we had anticipated lasting us the entire day. We are all from Tennessee and accustomed to heat but the big difference is dry versus humid heat. Dry heat causes more fluid loss and causes more thirst. This is common knowledge to most but we had not anticipated just how extreme it would be. Keep in mind, this was mid September and it was still hot enough to drive us into a small cave to get out of the sun. By the afternoon, we had to send out two friends to find water.