This is such a nice reprieve from the hell that is LAS and Vegas, in general. No smoking, no gambling, and if you're a tad bit hungover or wish to work towards a hangover, then there are many places to lounge and tasty drinks to be had!
I actually liked how easy it was to get from Terminal 1 (Southwest) to Concourse D (Lounge). We went through security, hopped on the tram (like you're exiting towards baggage claim), walked a few minutes to the lounge. Much closer than accessing Centurion from Terminal 1 at SFO.
I was stuffed from Pho Bosa, so just had their "Smoked Chocolate Budino | Cinnamon Ash, Sea Salt" -- yum.