For the first time in its 20 year history, the Big Valley Jamboree is completely sold out, organizers say.

"That's a big yee-haw," said Big Valley Jamboree producer Larry Werner with a laugh.

"As a promoter and a producer that's something you always want to achieve and we've been working hard at it for 20 years.

Organizers are reminding anyone planning on purchasing tickets for the country music festival from a third party or online website to be careful.

"There haev been a few fraudlent tickets," Werner said.

"When people are buying tickets, you should buy them from the reputable box offices and then you don't have any issues."

Tickets deemed void or fraudulent when presented at the gate won't be honoured by Big Valley Jamboree, organizers say.

BVJ crowds are estimated to reach 90,000 people over the four-day event that runs Aug 2 to 5 in Camrose, Alta.

It would be the festival's largest attendance on record.

"It's big numbers for us," Werner asid. "We're really excited."