Trains and a maze of bus routes run through the area. From the city, its often possible to walk to where you want to be. Parking is nearly all time restricted any day of the week, although cruising around the back streets is an option if the parking fairy is smiling upon you.
Kings Cross, can be accessed by bus or train to Kings Cross Station, which is on Darlinghurst Road. The train station exits deliver the visitor into the southern end of the main Kings Cross entertainment district. The 323, 324, 325, and 326 buses also run from Circular Quay, up Elizabeth Street and along William Street. You can also walk from the City Centre to Darlinghurst Road in around 20-30 minutes.
Oxford Street, has a long strip of night club, bar, restaurant, fashion boutiques and other retail activities running it's length. It starts in East Sydney at Hyde Park and runs through Darlinghurst,Taylor Square and on to Paddington. You can use the train station at Museum to enter Oxford Street from the Hyde Park end. This station is just near the start of Oxford Street, and you can walk the length of it in 45 minutes or so. The 'strip' unofficially ends around Queen Street in Woollahra. If you want to get directly to your destination, you can catch one of the stream of buses that go up Oxford Street. Routes 333, 392, 397, 373, 394, 399, 377 run from Circular Quay and Elizabeth Street and up Oxford St at least as far as Taylor Square.
Surry Hills, is adjacent to Central station and runs up the hills to the east toward Moore Park. Walk east from the station through Sydney's commercial fashion quarter and up toward Crown Street. Crown Street is serviced by bus routes 301, 302, 303.
Woolloomooloo, lies to the north of William Street across from the Domain and the Royal Botanic Gardens and runs down to the old wharves at Woolloomooloo Bay. Stairs link Art Gallery Road down to the finger wharves. The walk will take around 20 minutes from the city or Martin Place or St James Station. The walk is slightly shorter from Kings Cross Station, but a little less scenic, just follow Victoria Street from the station north to the water. Alternatively the 311 bus links Woolloomooloo, Kings Cross, Darlinghurst Road, Oxford Street and Railway Square every 15 minutes or so. If you are driving, you can park in The Domain car park (http://www.domaincarpark....), which is only a short walk away, or cruise around the back streets if you are feeling lucky.
Moore Park, has a frequent bus service from the city. Consider the Metrobus 10, which leaves Town Hall every 10 minutes or so. The 392, 394, 396 all continue from Oxford Street along Moore Park. You can buy a combined train/bus ticket from any station to Moore Park. During events extra buses run to Moore Park from Central Station. These buses leave from near the Chalmers St exit. These buses do not accept Multi tickets, but do except combined train/bus tickets to Moore Park. During events you may want to consider just walking from Central - you will see many people doing the same, the walk will take around 30 minutes. There is a multi-storey parking lot at Fox Studios The Entertainment Quarter which sometimes offers free parking for 3 hours, but charges a flat fee during events. Traffic around the area can be congested during events.