Blues, Brews and BBQs organisers say the Blenheim festival will keep running as long as enough people keep going.
Festival organiser Graeme Boon said he expected at least 3000 people to attend the 20th annual event at A&P Park in Blenheim on Saturday.
About 1000 tickets had already been sold but most people tended to buy tickets during the last week, he said.
"If people don't want to go, then we won't put it on," he said. "But if we still have enough numbers, it's not going anywhere."
Last year about 3200 tickets were sold, down from 2007 when ticket sales peaked at 6800.
Last year's headlining act Opshop had failed to lift the numbers, he said.
"They're a quality act but they did nothing for sales."
Unlike the past three events, this year the festival is open to all ages.
People would be given wrist bands when they arrived, but drunk people would be turned away, Mr Boon said.
"If you get off the bus and you're not in a fit state, you can't come in," he said. "It doesn't matter if you have a ticket or not."
The relatively cheap cost of drinks should prevent people from pre-loading, he said.
Prices ranged from about $4 to $6 for a glass of beer, with a variety of food also on offer.
Profits go to community organisations and activities, mainly centred around youth, Mr Boon said.
The festival runs from noon until 7pm, with no alcohol served after 6pm.
Tickets can be bought from the Blenheim i-Site, Ticket Direct and BNZ banks in Picton and Blenheim for $35 until 1pm on Saturday.
Noon-12.50pm: Tamatea Blues (Wellington)
1pm-1.50pm: Laura Sonneveldt (Westport)
2pm-2.50pm: Jack Derwin (Melbourne)
2pm-2.40pm: Murray Molloy comedian, contortionist and sword swallower (Ireland)
3pm-4pm: The Johnnys (Nelson)
4pm-4.10pm: Fancy dress awards
4.10pm-5.30pm: The RatBags (Wellington)
5.40pm-7pm: Helter Skelter (Blenheim)