This airport is kinda deceitful. From the outside, and even inside the terminals it looks modern, clean, and inviting. That all changes the moment you need to excuse yourself to the restroom.
Hands down the nastiest restroom I saw the whole time I was in Vegas, like seriously. I am pretty sure there was even a glory hole in one of the stalls. Unless you are into that kinda thing, you are probably better off holding it in.
The TSA line was also frustrating. They flagged three pax carry-ons in front of me for additional screening, but they would only screen one bag at a time. I stood there, with my backpack in the xray scanner giving it a nice radiation bath for over 15 minutes while they meticulously went through a sorority chicks lacey panties and grampa joes dentures and woodworking mags. They refused to carry on until the other luggage had been screened, even though mine was in the machine and fine.
They do have an American Express lounge and a handful of fast food joints. Oh, and do yourself and your wallet a favor and STAY AWAY FROM THE SLOTS IN THE AIRPORT!