I've flown from Las Vegas McCarran airport twice and in the intervening years, I've seen the airport grow immensely. Virgin used to fly our of a poky little temporary terminal but the new airport is quite impressive.
You can certainly tell that you're in Vegas with slot machines in the terminal buildings but there are also more peaceful areas like the exhibit telling the story of the airport from its early years.
On arrival, my luggage arrived at the carousel quickly and efficiently. The options to get to your hotel is varied and hard to differentiate which are the better companies. The transfers I've tried have been OK but I'm still hoping to find something more reliable and punctual.
On departure, I was hearthened to find that my teddy bear, Teddy found some fellow animals to play with in the terminal!
One other bonus is that the airport is almost right next door to the Strip, so make sure you get a window seat because you get some great views of the hotels as you come in to land and on take off