The UU has invited David to be the featured speaker on Memorial Day weekend. He will discuss local efforts by the Central Florida Freethought Community (CFFC) and its members and will provide the motivation and the means to become an an advocate for state/church separation. Maybe some activists will be created as well!
The Society's services on Sunday are very much like educational meetings in other organizations. The event is secular and this UU society is made up of a great deal of local freethinkers, many of whom are members of the CFFC. We will feel right at home.
We know some non-believers have an aversion to church services so here's a helpful page that describes what you can expect on any given Sunday morning: http://www.universityuus.org/services.php