Fans attending the NRL grand final on Sunday are advised to arrive at ANZ Stadium early and by public transport after the NSW Police's counter-terrorism security measures caused large-scale delays at Parramatta Stadium this week.

A large police presence and more scrutinous security procedures are set to be in place across the Olympic Park precinct for the rugby league decider between Canterbury and South Sydney as part of the state-wide counter-terrorism measures dubbed "operation hammerhead".

Compulsory bag checks, full body pat-downs for all entrants, segregated inspection lines and more detection dogs are some of the measures that may be in action as part of the NSW Police security measures, which recently hampered the experience of spectators of other codes. ANZ Stadium is confident of a smooth passage into the ground, having avoided delays in last weekend's NRL semi-finals, but the venue encouraged fans not to risk delays by arriving at Olympic Park well before kick-off at 7:20pm.

"We have been well briefed by NSW Police. It's business as usual and we're prepared for Sunday's grand final," an ANZ Stadium spokesman said. "We will have more than 80,000 people attending and we encourage them to arrive early and enjoy the entertainment in the precinct."