I been to Vegas a ton of times, and this time I actually decided to venture out to the Gold's on Flamingo to train. The girl at the front didn't hassle me at all about a traveling vistor's pass and was very accomodating.
The gym itself is HUGE compared to the Gold's Gym back home. They have a ton of dumbbells and alot of Nautilus/Hammer Strength Machines. It also has very retro feel to the gym as many of the machines are the same ones that you see Arnold using as well in his hey-day.
Everything from the power lifting area to the posing mirrors in the locker room, you can tell this is hardcore bodybuilder's gym.
The gym is open 24/7 and the easiest way to get here is to take the bus. It'll pick you up and drop you off at the Caesars Palace in about 15-20 minutes. Cab ride will cost around $16 while, the bus is $4! If you're in town and just can't seem to stay away from the gym, then this Gold's is a definitley the place to go. Besides Venice, Las Vegas has to be one of the landmark gyms for the West Coast!