The wristband system has been put in place in order to deter "fence jumpers" from trespassing on the Inveresk Showground site, with extra police and security to patrol the festival.

"We decided to put the wristbands in place to make sure all the patrons who are here are in fact our patrons," Mr Pease said.

"Breath of Life costs a lot of money to put on and it raises money for the Australian Lung Foundation, so people who decide to come and just jump the fence are stealing.

"So anyone found on-site without a wristband on will be asked to moved on and if police choose to they will enforce laws about trespassing."

An line-up of national and international acts will see Macklemore and Ryan Lewis, Public Enemy, Empire of the Sun, Drapht, Dead Letter Circus, Porter Robinson, the Stafford Brothers, Will Sparks, Parkway Drive and The Butterfly Effect take to the stage in Launceston.

Promoters are hopeful the event can attract a crowd of about 10,000.

VIP tickets sold out earlier this week, but there will be gate sales today for $140.

"It's a three-fold thing that makes this event a success," Mr Pease said.

"The support of the public that buys the tickets, the support of our sponsors and the support of local council, which obviously isn't here this year, so it is another hole we have to fill.

"Once again every hotel in town seems to be sold out, the town is abuzz and everyone will see the benefits of it being here and we just want the support to ensure we can keep it here for may years to come."

Gates will open at 10.30am.

Patrons will also be encouraged to make a video or take a photo on their mobile device to help "Wake Up Krissy". Hobart woman Krissy McDougall has been in a coma since a car crash on the Midland Highway last month.

Any videos or photos can then be uploaded to the Wake Up Krissy Facebook page.

Mr Pease said it was the least the festival could do to help support Ms McDougall, who had been planning to attend Breath of Life.