I travel through CLT many times each year and the USO is a great place to get away from the crowds inside the terminal. The volunteer staff is always welcoming and will provide a tour if you're a first time visitor. Free food and drinks are always available and the free wifi is fast and reliable. I'd love to see airport management provide the USO a larger location as this lounge is not large enough to cater to the large number of service members and retirees that transit through CLT on a daily basis. Expect limited seating on weekdays during peak travel hours and plenty of room on weekends,