A man will face court for allegedly driving a car more than four times over the level alcohol limit in Fairy Meadow.
A 34-year-old man was stopped for a stationary random breath test about 10pm on Friday on Squires Way.
The man allegedly returned a breath analysis reading of 0.216.
He was issued a future court attendance notice for the alleged offences of high-range drink driving and possessing a prohibited drug.
Police are out in force over the Australia Day long weekend during Operation Safe Return.
The blitz started at midnight on Friday and stops at 11.59pm on Monday.
Double demerits will be in place throughout the period for speeding, seatbelt, mobile phone and motorcycle helmet offences.
Police officers will also be targeting other poor driver behaviour, including drink-and-drug-driving.
Further to the road crackdown, Wollongong and Lake Illawarra Police Districts are urging residents to plan ahead to ensure safe Australia Day celebrations over the weekend.
A highly-visible and mobile police operation will be in place on Sunday with residents and visitors expected to join in Australia Day events across the region.
Wollongong Police District Commander, Superintendent Evan Quarmby said the operation would see general duties officers, assisted by specialist police, out in force to ensure everyone enjoyed themselves safely.
"Police officers recognise this has been a difficult time for the community of New South Wales and we want everyone to have an enjoyable time this weekend celebrating everything that is great about being Australian," Supt Quarmby said.
"Australia Day is an opportunity to reflect on the courage, selflessness and resilience of our country and our people - particularly our strong sense of community in times of crisis.
"In the true Aussie spirit of mateship, we also want to honour and support those who are facing times of hardship and thank those who continue to provide assistance."
Lake Illawarra Police District Commander, Superintendent Dean Smith added police would be out in the community focusing on alcohol-related crime and anti-social behaviour.
"If you're planning on having a drink, look after your mates, drink in moderation, and if you're driving -always have a Plan B," Supt Smith said.
People are reminded to check the conditions of entry, especially relating to alcohol-free zones and whether bottles are permitted, if they are planning to attend an event.