Living in Charlotte from time to time, the only airport is CLT. I have to say the years of living on and off in Charlotte the one thing that has stayed to it's form is the airport (except for the fact that they are building more of it due to the spike in population). Unusually smooth process for as busy as it's getting. I usually always fly US Airways (that's one of their main hubs). One one or two accounts other airlines and it was still pretty good.
Once getting thru TSA you pretty much have a bevy of places to eat, drink, shop or all of the above. Pending on the time you have before boarding. So if you ever have to come to Charlotte or go thru CLT for travel, don't worry it's all pretty smooth