I don't think so! The few I've been to are like a regular sermon but they focus more on community issues, philosophy, ethics, and general spirituality instead. If you do follow a major religion, the church probably have smaller groups that meet during the week for things like bible study, meditation, etc and to discuss their specific religious text. I have enjoyed the few services I've attended at 3 Unitarian churches. A lot of focus on volunteerism and civic engagement at the first two.