Mt. Charleston overall is a nice play to visit for the day to get away from the Las Vegas heat. As far as dispersed camping, come supplied and be ready to be self-sufficient. There are no natural water sources for extra water, no cell service in most areas, and no services outside of the small town on the main road. I prefer Mt. Charleston more as a day trip than an overnight trip. The hiking is great, but there is not much else to do beyond hiking. It does get snow in the winter time, which is a plus. There is skiing and places to go sledding in the winter.