Flying in and out of Las Vegas' airport isn't super fun anyway as most travelers are most likely to be hungover and/or sleep deprived and therefore not in the best of moods.
Though pretty easy to navigate with their signage showing where to find the cabs and which terminal is where, their security checkpoint is horrible. There was one long, slow moving line to get through security with one x ray machine open for carry ons and passengers for Gates A through C. It was fairly busy, as I'd assume Las Vegas is pretty much all the time but this airport did not have the people to accommodate that. Numerous people in front of me were late and/or running to their airplane. I was a runner and made it just in time.
My advice, you plan on flying out of this airport, come earlier than you normally would.