Dear Neal,
Thanks for contacting Top China Travel!
Hongkong Airport has shuttle bus from the airport to Hongkong Station(100 HKD), but the bus wont' go to Wanchai.
From Hongkong Airport to Hotel (Butterfly On Morrison) in Wanchai:
Option 1: take airport shuttle bus to Hongkong Station, take metro from Hongkong Station to Causeway Bay Subway Station, then walk about 600 meters to the hotel.
Option 2: take airport shuttle bus to Hongkong Station, take taxi from Hongkong Station to the hotel.
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Any further request or question, please feel free to contact with us.