Breaks my heart, but I had to give up the chance for two tickets to SEMA the first of last week through a classic Mustang Forum I use. Anyway, on your question, I've lived here in Vegas since '85 and have used several different parks for various reasons over the years including just getting out of the house for the night. My first suggestion is Arizona Charlie's. Reasonable location and price. I've done two long stays there while househunting.
Stan, Shirley & 2 Schnauzers (Sandy & Sassy)
RV: 2014 Itasca Sunstar 35F
USAF, Retired, Life Member: VSPA, DVA, VVA, VFW