We were so very fortunate to be asked to take part in the Ensemble. The kids had an awesome experience.
The kids were in the opening number, Tradition, Sabbath Prayer (Rebekah on-stage and Joel singing off stage), To Life - L'Chaim (Joel), The Dream, The Wedding (Annabelle, Joel, and Rebekah), Rumors (Joel and Rebekah), Annatevka, and the Finale. Joel had one line. (He said, "It was a mule!" in the opening act!)
The kids danced and sang and made friends and had a great experience. There were ten hour long rehearsals the week before the production, and the entire experience took up about a month of our lives. All sorts of friends and family came to see the play including my dad and Dan's family.