Stereophonics fans heading to the band's gig in Wrexham this weekend are being warned of a timing error on some tickets.
Those affected have received an email telling them the 4.30pm gates opening time stated is incorrect.
Gates actually open at 3pm, with the first support act, The Ramona Flowers, due to start their set at 4pm.
Pretty Vicious will go on stage at 5pm followed by Catfish and the Bottlemen from 6pm.
The Stereophonics will perform from 7.40pm.
Promoters blamed the mistake on a 'printing error' in an email telling concert goers they can access the site at Wrexham’s Glyndwr University Racecourse Stadium from 3pm on Saturday July 2.
It is understood that the error does not apply to the latest batch of tickets issued.
People are also urged to leave enough time to exchange their ticket for a wristband, which can be done in the sports centre located in the grounds of Wrexham Glyndwr University , behind the stadium on Friday, July 1, from 5-9pm or Saturday, July 2, from 1-10pm.
The Welsh band, who have sold more than 10 million albums, will become the first artists to play a live show at the stadium since the 1982 Wrexham Festival, when hard rock legends Motorhead, Budgie, Tank, Raven, Orion and Twisted Sister powered out the music at the home of the town’s football club.
The Stereophonics – Kelly Jones on vocals and guitar, Richard Jones on bass, Adam Zindani on guitar and Jamie Morrison on drums – are regarded as one of the country’s top bands, and their latest acclaimed No1 album, Keep The Village Alive, features recent hit singles C’est La Vie, I Wanna Get Lost With You and Song for the Summer.
In July 2012, they gigged at Venue Cymru, Llandudno, as a warm-up ahead of representing Wales at a concert in London’s Hyde Park to mark the start of the 2012 Olympic Games.
About 20,000 fans are expected to descend on the Racecourse Stadium, home of Wrexham AFC.
Have your say on this story using the comments section below