From the airport to the hotel at night, you can take bus N21 to Mongkok Nathan Road and then take a taxi to the hotel.
From the Ocean park to the peak, you can take bus 6X to Central and then take bus 1 to the peak.
From the peak to the hotel, you can take bus 1 to Central, then take MTR to Mongkok. Then catch a taxi to the hotel.
From Disneyland to the airport, you can take the DIsneyland resort to Sunny Bay, then take MTR to Tung Chung. From Tung chung, you can take bus S1 to the airport.