"We are not looking for an argument with the police. If they clear the road outside the car park we will accept that. If they clear other areas it will be very disappointing."
Some protesters packed up pillows, blankets and other belongings from inside their tents and moved to another part of the demonstration zone.
"Our plan is to do nothing and just observe," said protester Gary Yeung, 25.
"The pre-agreed area is fine. Anything beyond that is not. It's a peaceful protest so we won't fight back."
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The area near Citic Tower, headquarters of CITIC Pacific, has been surrounded by metal barricades, disrupting commuters heading to the Central business district nearby.
Scores of colourful tents dot the area that is home to some of the world's most expensive real estate.
The former British colony of Hong Kong returned to Chinese rule in 1997 under a "one country, two systems" formula that gives the city more autonomy and freedom than the mainland with the goal of universal suffrage.
The protesters are demanding open nominations in the city's next election for chief executive in 2017. Beijing has said it will allow a vote in 2017, but only between pre-screened candidates.
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A similar injunction has been issued for a street in the gritty district of Mong Kok, another protest site across the harbor from Admiralty that has seen some of the most violent clashes over the past seven weeks. It was not clear when authorities would enforce that order.