Where is your hotel? Anyway, you should spend one day at Ocean Park Central and another day in Disneyland. The famous night market is the Temple Street in Yau Ma Tei.

I will be staying at Royal Plaza. Unfortunately, I only have 3 full days there. How should I plan so that I will not miss other places that will be worth going? I planned to go macau too. Any must go places in macau?

This hotel is located close to Mong Kon station of HK metro, which will be helpful.
On Feb 4, please take the metro to Disneyland and spend one day there. You could back to Tsim Sha Tsui in the late afternoon by metro and do shopping.

On Feb 5, please take the metro and get off at Admiralty station. At the Exit B, you could take the bus 629 to the Ocean Park. Then, around 15:00 please take the bus back to Admiralty, from where you could visit the Victoria Peak. Finally, please take the metro to Jordan where the Temple Street Night Market is located.

On Feb 6: you could take a ferry in the early morning to Macau and return in the same day. Of course, you could stay one night in Macau and then take a ferry from Macau to Hong Kong Airport directly on Feb 7.