1. from this hotel, you could walk to the Fortress Hill metro station firstly and then take metro to Admiralty. At the Exit B, there is the bus 629 driving to the Ocean Park directly. On the other hand, if you have 4~5 people together, taking a cab from the hotel to Ocean Park directly is suggested.
2. Metro is suggested. From Fortress Hill, please take the metro to Admiralty and then transfer to Tsuen Wan Line to Lai King Station. Here, please transfer to Tung Chung Line to Sunny Bay where you could take the Disenyland Resort Line to the park directly.