Thousands of diehard Socceroos supporters have braved a crisp winter morning to pack live sites and pubs for Australia's do-or-die clash with Egypt.

Enthusiastic supporters, dressed in a sea of green and gold, set out hours before the 4am kick-off to secure a spot at live sites and pubs in cities including Melbourne and Sydney.

Victory over Egypt at Dallas Stadium would hand the Socceroos their first World Cup knockout win and lift them into the round of 16.

Melbourne's Hickens Hotel, a longstanding fan favourite for watching the game in the city centre, is among the venues taking advantage of relaxed licensing laws for the occasion.

The pub has capacity for more than 1000 patrons.

"We'll be full," bar manager Giuseppe Lacaua told AAP ahead of the match.

The venue, which boasts more than 60 screens, began preparing for the turnout months in advance.

"We remove all the chairs to create a stadium-like atmosphere," Mr Lacaua said.

"It's electric ... just a really, really fun atmosphere."

Despite the early start, revellers were still tipped to celebrate in the usual pub style.

"We've ordered over 20 kegs in preparation ... and that's just of Guinness," Mr Lacaua said.

Socceroos coach Tony Popovic thanked venues back home for providing places for fans to gather and really soak in the atmosphere.

"We know that that will just enhance the experience for the locals who love a drink and love to watch sport in general in Australia," Popovic said.

"When you've got pretty much every single Australian - over 25 million people - wanting to watch the Socceroos, young, old, boys, girls, and if this enables our fans to enjoy the live sites with a drink, then we thank whoever's organised that."

Winger Ajdin Hrustic, who was a part of the team that enjoyed a golden run in Qatar, has long believed this group of Socceroos can be the first to win a knockout game.

"It most likely will happen one day, and it can be us, right?" Hrustic said.

"If you have your day on that day, you go further. The next game, it's your day again.

"You've got to create it, you've got to make it happen. It's not going to get gifted to you.

"So we're definitely going to fight for it, and we'll prepare the best we can."