Others have covered the main points of interest well already.
One thing I will add is that the Avenue of Stars that a couple people mentioned is closed for renovations until late 2018. If you are interested in seeing the Bruce Lee monument, they relocated it a block or two away, and you can find the location by searching "Bruce Lee statue" in Google Maps. Worth checking out if you're in the area to see the light show already anyways.
Drop me a pm if you do end up staying in Wan Chai - I work in the area and can give you tonnes of food suggestions
