Do you mean that you would like to these three places in one day? Well, if so, in the early morning, suggested that you take the metro to Tung Chung and transfer to Ngon Ping 360 to the Giant Buddha. The rest of the day will be spent in the Disneyland until the fireworks finished. Then, you could take the park bus or metro back to the hotel. As for Causeway Bay, you may have a walk there at other space time.