"It's coming together very well, we are having a lot of fun, and it's nice working in a small cast, and the girls are having a great time.
"There is a lot of audience participation and interaction. Casa Blanca theatre is ideal for that."
Nunsense has been extremely popular overseas.
The original production opened in 1985 and ran for 3672 performances, becoming the second-longest running off-Broadway show in history. Mr Marshall said the script had been revamped since the 80s.
"It is really cool, it has been done world-wide.
"It has been revised slightly, as it was originally written in the 80s, to make it more current so it's nice to see those changes, and originally it was just written for a couple of pianos, but the eight-piece band sounds fantastic."
Tickets are on sale now and can be purchased from the Ticketmaster box office at the Sir Howard Morrison Performing Arts Centre or at www.ticketmaster.co.nz.