Please give me details of a journey to and from HKIA to Park Lane Hotel in Causeway Bay.

Take Airport Express train from HKIA to HK Station. Then, take free shuttle bus line H2 to the hotel. The buses are available from 06:12 to 23:12 at intervals of 20 minutes.

By the way, you need to show your boarding pass/ airline ticket and AE train ticket (Same Day Single Journey Ticket; Same Day Return Ticket; a Round Trip Ticket; AE Travel Pass; Group Ticket; Ticket Voucher; Ticket QR Code; Octopus payment record) before boarding the bus.