Don't miss out on the flag raising ceremony at the Golden Bauhinia Square located outside the Hong Kong Convention and Exhibition Centre at 8am everyday. Do make a point to reach there no later than 7.40am to give yourself time to compose your angle and photo. You can only reach there by MTR and walking. Allow yourself about 20mins to walk from the MTR to the Golden Bauhinia Square. Study or print out the map in advance as the ceremony wait no one. The place will be crowded with tourists on a good day.
The Peak, they have 2 viewing areas. The free area and the paid area on top of the Peak Tower's Sky Terrace.Personally I felt the Sky Terrace is worth the visit as the camera angle is much better. REMEMBER to bring a tripod and shutter release cable there. Its really worth the hassle. The "Pacific Coffee" Cafe in the Peak Tower is also worth mentioning to visit. Not for the coffee but it has one side of the sofa facing a huge glass window with a nice view.I think you can just walk inside and take a few quick snaps over there.
The Goldfish market is also a nice place to visit in the morning. Its located at a corner of Mongkok.