Don't take the MTR Tsuen Wan Line to Tsuen Wan Station by mistake, because the next stop is shorter and there are more stops on the Tsuen Wan Line than in west rail line.
Arrive in admiralty station, then take bus No.629 at the nearby bus stop, and the terminal is Dashuwan. (Next to Ocean Park) It takes 25 minutes by car, and the fare is 10.6 yuan.
(2) The busiest shopping places in Hong Kong are Mong Kok, Tsim Sha Tsui and Causeway Bay. All three places can be reached by subway, which is very convenient. If you buy clothes, it is Mong Kok and Causeway Bay. The former is middle and low grade, and the latter is middle and high grade. But if you want to buy digital electronic products, you'd better go to Mong Kok. Xiyangcai Street, a whole street with several large chain stores such as Fengze, Broadway, Zhongyuan and Suning Laser, plus smaller chains such as Lele Store and Weixun, is the most concentrated place of digital products in Hong Kong. It's at the E2 exit of Mong Kok Steel Station. Exit C3 is the famous Langham Place+Seibu Department Store. The next street east of Xiyangcai Street is Cai Tong Street (commonly known as Ladies Street) and Garden Street (commonly known as Xiebo Street), both of which are good places for shopping. Forgot to walk east 10 minutes. It's Mong Kok East Station, next to New Century Plaza, another large shopping mall in Mong Kok.
(3) Snacks are good. You can basically eat all Hong Kong snacks in Mong Kok. There are Xu Liushan chain desserts in Xiyangcai Street, and there are many Hong Kong-style tea restaurants (Boluobao, egg tart, coffee, milk tea or Yuanyang), Hong Kong-style roasted meat shops and chezai noodles throughout Mong Kok. There is also a famous place to eat Hong Kong-style skewers in Hong Kong. It's the basement level, next to Xianda Square in Mong Kok, diagonally opposite Xiyangcai Street. There are many kinds of Hong Kong-style skewers, including fish eggs, fried Sambo, fried large intestine, pigskin, and eggs that Hong Kong people like very much.
That depends on how much free time you have. You can go to Causeway Bay if you have more. Tsim Sha Tsui, I'm sure the tour group will take you there.