1. COLD STORAGE at Centrepoint basement, Orchard Rd or at Ngee Ann City, Orchard Rd. If you went to go to mega supermarket, you may go to Carrrefour at Plaza Singapura, which is opposit to Dhoby Ghaut MRT station.
2. 藥油?!!
3. If you are going to Orchard Road, you need to take the MRT at airport Terminal 2, then transit at City Hall station, take the NS line (Jurong East) and get off at Orchard Station. If only adults and no much luggage, it is OK, convenient and money save.
If take taxi will cost approx S$17-20.