It is Vegas so don't be surprised with the slot machines and gambling stations inside the airport. I flew Southwest to gate C and it was under construction. Once you take the detour and look past the renovations, you will find your way to security. The gates and waiting areas seem smaller to me compared to other airports so you may have to wait in the seating area next to your assigned gate. There are vendors selling food and souvenirs in the terminal halls and I saw Jamba Juice, jersey Mike's, Nathan's hotdogs and a few other fast food chains.