This airport is awesome! It's one of the bigger ones I've been to and it's easy to navigate.
You never need to worry about being bored either. Since it's Vegas there are slot machines everywhere, as soon as you step out of the terminal. There's also so many stores and restaurants. If you still can't figure out what to do just look out the windows at the amazing views of the Las Vegas strip!
I've never been bored in this airport. And if all else fails, just listen in on tourists conversations about "What happens in Vegas stays in Vegas". You will probably hear the most craziest stuff that, well, only could have happened in Vegas!