Common Market is a great place! It has one of the best beer selections in Charlotte. (They also have a lot of wine) You can get good microbrews for a decent price and enjoy them there or take them home. There is occasionally live music and other events on the patio and behind the store. But even when there's not the patio is still a great place to sit and socialize. The only downside to the patio is that it isn't that big and can get crowded and smokey. Inside there is a great atmosphere with an eclectic music selection and usually interesting people with whom you can talk. Inside there is also a deli area with sandwiches, soups and salads. The menu includes vegan options if that's your thing. There are also a lot of interesting trinkets you can buy.
The Common Market is a great place to sit with a group of friends, a special friend, or by yourself. There are areas that get very loud but there are a couple corners you can find that are quiet enough to read by yourself all the while enjoying tasty beverages and food. It's also in a great neighborhood where you can walk to a number of other fun places.