In the realm of educational theatre, the rehearsal process for a main-stage show generally lasts several weeks, if not months. It can

be hard work. Yet if the selected material gives actors and directors enough to work with, what could be a laborious process is, for its participants, more often a joy.

Ninja-style nuns, two sets of twins separated at birth, woeful lovers, men vaguely resembling Elvis, and a society divided by religious differences. These and more are part of the annual Shakespeare festival at Riverside outdoor theatre in Iowa City, with The Comedy of Errors and Romeo & Juliet on stage in repertory through July 7.