The concert has been a bit of a mission before.
In 2009, thousands sat through hours of rain before being told about 6.30pm that Lionel Ritchie's concert had to be cancelled because of the weather.
And in 2018, Neil Diamond's diagnosis with Parkinson's meant his 2018 tour and Napier visit was cancelled.
Mission Concert publicity manager Sandra Roberts said a traditional dinner at the Mission Estate Winery Restaurant would be held on Tuesday, September 20 to announce the headline artist.
Those who attend remain under strict instructions not to tell anyone who it is until the following morning when it is announced to the world.
Roberts said the Mission Concert had a proud history of presenting the world's biggest and best entertainers.
"You can be sure the artist headlining the concert in the event's 30th year, will be a global phenomenon."