Do not do three themes in one day
Bay walking, Orchard shopping, Sentosa tickets, Mandai wildlife — each needs half to a full day. First three days: Bay, one culture quarter, then south island or north Mandai.
Airport to the city
Arrival paperwork: see the arrival guide. EW or TEL into town; Jewel’s vortex is one hour — do not also jam USS on landing day.
Who this primer suits
First-timers, ≤4 days leave, no appetite for four-line detail. Already locked on Oceanarium-only or Rainforest-only: jump straight to those guides.