Grand Hyatt Hotel Kowloon is near Huangpu Garden Terminal.
To go to Lantau Island, you can take the direction of E23 airport and get off at Tung Chung (where is the fire station). After getting off, turn right, cross the road and go straight to citygate, Tung Chung, which is the largest brand-name discount store in Hong Kong, next to the 36 cable car station. You can take the cable car to the Lantau Giant Buddha, which is expensive and has good scenery, or you can take a bus, which is cheap, but not so beautiful. There is a shuttle bus to Tai O at the bus stop. I suggest you go to see the small fishing village in Hong Kong. It's enough for a day's tour here. By the way, there is Disney near Tung Chung. You can take the subway to Xin 'ao and take the Disney train. You can also transfer to the Disney bus at E23 Tsing Ma Bridge when you come here. )
Go straight along the hotel's waterfront avenue, which is the Avenue of Stars. I suggest you walk for about 2 minutes and see the Victoria Harbour by the way. Next to the Avenue of Stars is Tsim Sha Tsui, where is Harbour City, one of the famous shops in Hong Kong (the other is Causeway Bay) (if you don't want to walk, where is the 8A bus at the main station, and the No.6 minibus can reach Tsim Sha Tsui. Tsim Sha Tsui can cross Central by boat, and then take the cable car to the top of the mountain. You can also take the subway to Admiralty and take the Ocean Park bus. If Huangpu can take No.115 to Admiralty or Causeway Bay)
If you want to go to Wong Tai Sin, you can take minibus No.2 in Huangpu and transfer to the subway in Festival Walk.
if you want to go shopping and travel, the above four days will be enough for you. There are also many shopping malls near the hotel. Enough for you to visit.
if you have any plans, please ask me again.