This airport is exactly what you would expect in Vegas. There are glass enclosed rooms with slot machines that all the smokers bee line to after their flight to start smoking. Gross.
The signage could be way better at McCarran. I feel like there are not enough exit signs or signs directing folks to ground transport.
Another thing to know about McCarran is that for some terminals you'll have to take the monorail to actually get to the main part of the airport/exits. Just FYI.