What is the theme in The Last Night of Ballyhoo by Alfred Uhry?

Assimilation is another theme.The Levys, Freitags, and Weils represent those families who emigrated from Europe generations ago and assimilated to the United States fairly quickly. Assimilation is a common practice for immigrants, and for many cultures, success is indicated by integration into mainstream society. Unlike the newer Jewish immigrants, both the Levy and Weil families claim an extended southern lineage. Peachy's family has been in Louisiana for one hundred and fifty years, and they have no relatives remaining in Europe.