Lots of spacious room and seats for passengers coming in & out of McCarran! Plenty of charging spots for those who want to charge their cell phone.
I will leave you with one piece of advice though. Avoid the slot machines in the airport, they are absolutely extra tight. You can now also take Uber/Lyft to the airport from your hotel, it's almost half the cost of a cab. I have no idea if you can request an ride-sharing service to your hotel from the airport though.