This is my favorite airport and was a big reason I moved to Charlotte. Getting in an out is a breeze. The airport is big enough to hold the number of flights it does but does not overwhelm. Let's start with getting in. If you are cabbing then it's super easy. Most fliers take US airways so get down right in the middle, highly recommend the mobile boarding pass to skip lines, a number of kiosks help as well.
Premier status gets you easy access through checkpoint C, usually there are no lines, except if the security officer is not around, then everyone makes a beeline for C. Once through security, there are a couple of decent food options. Recommend the beaudevin, will review that separately. Starbucks is always crowded. Smattering of the usual airport shops. If you are in the mood for (window) shopping, there is a row of shops: Johnston and Murphy, Lacoste, PGA etc. The whole airport is pretty much walkable. Just leave enough time if you have to get to the high E gates: E36 can be a bit far.