Hi, what is the best mode of transport from Disneyland to WanChai?

The cab fare is 200 to 210 HKD.
If you feel the fare is a little more expensive, you can choose to take subways. Take Disneyland Resort to Sunny Bay Station and take Tung Chung Line to Hong Kong Station. Then transfer to Island Line to Wan Chai Station, Exit C. After arriving, walk to the destination directly. The ticket fare is 24.2 HKD. And it takes around 50 mins on the way.

Thank you. Now is that $210 hkd per person? Can that be organised from Disneyland while we are there or r I have to do it earlier? I have a child with me so i would prefer the taxi instead of subway I think.

Of course you can take a taxi directly. The cab fare is not for per person. The fare that I mentioned is for one taxi.