You can take MTR from MOng Kok Station to Admiralty and then take Bus 629. When getting back, you can take the same route, it costs around HKD20 per person.

What bus can I take from Mongkok to Admiralty so I can take bus 629 going to Ocean Park? We can't ride the MTR because we have senior citizens with us. Thank you! :)

You can take bus 104 at Shantung Street, Nathan Road, the bus stop is very close to Sun Hing Building. Then get off at Pacific Place, Queensway Stop, Admiralty. Bus Fare: 9.3HKD. Then bus 629 to near to Exit B of Admiralty MTR Station. You have to walk a bit there.

Thank you sir!