The characters of Nana, Jane, and a Mermaid were all played by Cathy Rigby's children: Thomas Buck Mason, Theresa McCoy, and Kaitlin McCoy.
The original Broadway production of "Peter Pan, or The Boy Who Wouldn't Grow Up" by J.M. Barrie opened at the Empire Theater on November 6, 1905, ran for 223 performances, closed on May 20, 1906 and starred Maud Adams.
Three male characters, Peter, Tootles, and Twin #1 are played by women in this version of the show. Although it's traditional for Peter to be played by a woman, in virtually every other version of the show, Tootles and Twin #1 are played by boys.