The places vary both from one to the next and from hour to hour. The coffee shop closest to me is large, and has a kiddies play area. In the afternoon it is unusable, overfilled, screaming, chaos, but from 5:30pm to 8:00pm closing time it's silent, everyone is reading or working, and it's very pleasant. The next coffee shop along has business meetings and bridge players in the morning, but the afternoons are quiet. There is coordination overhead.