Electric Avenue Music Festival at Hagley Park has been sold out for a month, with 25,000 people expected on Saturday.
All of the acts on the day are Kiwis after three Australian performers, Tash Sultana, Ocean Alley and Bootleg Rascal, were unable to attend due to Covid-19.
One of the key performers will be Christchurch-born rapper Scribe who has been out of the limelight for years.
The father of four burst onto the New Zealand hip hop scene about 15 years ago, his drug-use intensified after finding fame, landing him in jail and rehab on several occasions.
After a stint in rehab in late 2019, Scribe said he is now sober and has kept out of trouble.
Some of the other key performers include Benee, Fat Freddy's Drop, L.A.B and Tiki Taane.
Ticket scamming has been rife with organisers having to warn those wanting to buy tickets to only purchase them through official channels.
Organisers put out a warning to attendees on Facebook after drug-testing service KnowYourStuffNZ discovered an increase of synthetic cathinone known as eutylone, being sold as MDMA, or ecstasy, this week.
About 40 per cent of the samples brought by people thinking they had MDMA during O-week tests have turned out to contain the substitute.
Free drug testing was offered to concertgoers on Monday and Tuesday this week.
