"This will be the 11th time Wellington Gilbert and Sullivan Light Opera has toured to Whanganui since first presenting The Tales of Hoffmann in 2007," said Mr Gordon.
The company bus was stranded near Hunterville one year when flooding in the area caused major slips on the road.
"That was in 2010 so although we intended to come 11 times, this will actually be the 10th."
"Iolanthe is one of the four most popular of Gilbert and Sullivan's works," he said. "It was when the librettist and composer were at the height of their powers."
Gilbert, having made various British institutions and personages the butt of his humour in preceding works, used this work to lampoon the institutions of government.
The fallibilities of politicians and guardians of the law are subjected to Gilbert's observant digs in Iolanthe.
"When in the House, MPs divide... they've go to leave that brain outside, and vote just as their leaders tell 'em to."
Mr Gordon said audiences will find that a few of the texts have been seasoned with topical New Zealand references.
The production is fully staged and costumed, with a cast of 32 singers and dancers accompanied by a 24 piece orchestra conducted by musical director Hugh McMillan.
The story is not without romance and introduces young lovers Strephon and Phyllis whose love affair becomes entangled with parliament-regulated antiquated legal strictures and rivalry.
Iolanthe, Royal Wanganui Opera House, Saturday July 1, 7.30pm.
Book at Royal Wanganui Opera House or online.