Get an Octopus card the minute you land

The Octopus card pays for the MTR, buses, trams, ferries, convenience stores, and most cafés; you can add it to Apple Wallet or buy a physical one at the airport and top it up at any station. Tap in and out. The Star Ferry between Central and Tsim Sha Tsui is the cheapest harbor cruise in the world, and the double-decker trams ("ding dings") on Hong Kong Island charge a flat fare paid when you get off at the front.