Elton fever has gripped the girls behind the counter, who've been playing a Spotify set list which was allegedly created by an attendant of his previous show.

Olivia Lee, Teresa Preston and Sheri Gray will be part of the 20,000 strong, record-breaking crowd set to pack out Carrington Park in Bathurst on Wednesday evening, as part of Elton John's Farewell Yellow Brick Road Tour.

The courthouse employees each agreed it was a once-in-a-lifetime opportunity.

"It's Elton John and he's in Bathurst," Sheri Gray said. "You wouldn't miss it."

Ms Gray will attend with her children Daniel and Courtney Baxter, her daughter's boyfriend Daniel Thompson, her colleague Ms Lee and Ms Lee's partner Guy Sadler.

While all fans of the 72-year-old performer, the crowd is mostly attending to be part of the action.

The Elton fans will skip work on Wednesday to make happy hour at The Vic Hotel, with the entire cohort joining a human conga line from the pub to the park at 6pm.

Ms Gray said she was online for early release tickets the moment they went on sale.

As a result, her two adult children received the gift of seeing one of the greats for Christmas.

Teresa Preston will make the trip to Bathurst on Wednesday with her friend Kath Adams.

"We couldn't miss seeing him in Bathurst," she said.

Orange Buslines has put on a sold-out bus services from Orange with the return service leaving Bathurst one hour after the show.

Ticket holders driving down have been warned against heavy traffic, with road closures in place for Durham, Bentinck, Howick and Seymour streets.