We combined this with a morning trip to Victoria Peak. After enjoying the vistas from up there, we took the #15 bus down to the central ferry piers. It turned out to be a slow drive down the mountain and through downtown noon-time traffic. At the central piers, it took a little time and walking to find the correct pier for the ferry to Kowloon. We looked for the ticket booth, but turns out you buy a token at a machine for the Star Ferry. It was a short 10 minute ride to Kowloon, and it is impressive seeing the Hong Kong buildings from the water. Sit at the windows for the best views.