Atomic testing museum might be open in the evenings. It's kind of cool.
The pinball hall of fame is open at least to 11:00 - if you're into that kind of thing. Huge room with tons of pinballs from at least the '50s to modern ones all for play. No bar but they have candy and popcorn. I'm sure there's a bar nearby or a cab or two in that town.
Both of the above are on Tropicana near or just East of UNLV.
We use LV as a hub to do nature/photo stuff in the desert. Used to spend the night in town then head out in the morning. Nowadays - ugh. We don't gamble, we look to other cities for dining and the douchebag "look at how much $$ I can spend" thing is done. In a few weeks we'll be on a 0630 flight ABQ-LAS and straight to DVNP...
Maybe still stop at Agent Provocateur on the way back to the airport.
