Sydney's New Year's Eve celebrations are expected to inject more than $150 million into the NSW economy, says Premier Kristina Keneally.
She also said 1.5 million people were expected to line the Sydney Harbour foreshore to take part in "one of the world's best parties".
More than 2,600 police officers will be on patrol across the metropolitan area, with most being at harbour and beachside locations and at public transport hubs.
"I encourage everyone to plan ahead, take public transport, and buy a return ticket to avoid the queues when heading home," Ms Keneally told reporters on Wednesday.
Police Minister Michael Daley said police would be out in force to ensure people had a good, fun but safe night.
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"If you are coming into the city to get drunk and behave like an idiot, stay home, don't bother coming," he said.
"If you do, the police will take care of you."
He also reminded people that consuming alcohol on public transport was an offence.
Ms Keneally said extra buses, trains and ferries would run on the night.
But the premier will not be joining harbourside revellers, as she and her husband have agreed to their sons' request to stay home and watch the fireworks on television.
