港鐵：屯門去尖沙咀的方法 + 車費

You can take MTR Bus No.506 from Ferry Pier Terminus to Tuen Mun Station and change West Rail line to Nam Choeng and change MTR VBus No.K16 to East Tsim Sha Tsui Station
Yes,West Rail line day pass is cheaper than use Octopus if you use two times on that day($12.9*2=$25.8)
If you have time,you can go to Nam Choeng Station and change MTR Bus No.K16 to East Tsim Sha Tsui Station and cross the footbridge to Tsim Sha Tsui Station
Or if you don't have time,you can go to Mei Foo Station and change Tsuen Wan line to Tsim Sha Tsui Station
Yes,you should change line by go to another platform.you will in West Rail line Platform but if you want to go to Tsim Sha Tsui Station,you should go to Tsuen wan line platform(to Central district)
Fee:(if you take Bus No.K16):$20+$3.7(go to West Rail line stop to buy day pass by take MTR Bus No.506 to Tuen Mun Station)=$23.7
Times:32+30+10 mins=72 mins(not including the waiting times and walking times)
(take MTR to Tsim Sha Tsui)=$16.8*2=$33.6
Times:62 mins(not including the waiting times and walking times)
Hope above information can help you!

K16於九龍南線通車後便會取消免費轉乘優惠，屈時請步行至屯門市廣場乘搭九巴260X線($13.3)往廣東道
或步行至屯門市中心巴士總站乘搭九巴60X線($11.3)往佐敦道，再步行約十至十五分鐘至廣東道一帶、五至十分鐘至尖沙咀站Ａ／Ｂ出口
西鐵全日通，於九龍南線通車時還是可以免費轉乘K16線，平均一程$10即可前往尖沙咀，九龍南線通車後，如果唔介意行的，乘搭九巴66線熱狗($7.7)再免費轉搭33A,37線往旺角，咁會更平，行得更少
（註：九龍南線於2009-08-16通車）