Hi.MTR would be much cheaper than taxi. Disneyland has free hotel shuttle to take you to the bus temrinus and MTR station. Then take disney special resort Line to Sunny Bay, change to Tung Chung Ling to Lai King, finally change to Tsuen Wan Line to Jordan Station. Get out from Exit B and then walk about 5 minutes forward to Nanthan hotel. Ngong Ping is also in lantau Island, closer to Disneyland. Ocean Park is in the south part of HK ISland. Ngong Ping cable is available at Tung Chung MTR Station Exit B. Tung Chung is the mtr stop a head of Sunny Bay of Tung Chung Line. As to the Ocean Park, you can take Tsuen Wan MTR Line from Jordan to Admiralty. Then leave from Exit B, find bus 629 to the park directly.