We hope to be in the LV area at the end of March/beginning of April for the world men's curling championships and the NHRA race.
This could be a factor, as you plan to attend event(s) that will likely draw more visitors than would normally be expected that time of year. Could impact the availability of camping in areas others have mentioned. Perhaps some of those folks have experience with these events? I have nothing to offer, other than to perhaps contact/check the websites for the events you plan to attend, and see if there's some specific information that could impact your plans.