Why pick a corridor first
Singapore shopping is not one street across the island. Orchard is branded AC; Bugis / Haji is budget and indie; VivoCity is pre-island supply. The wrong corridor wastes half a day in transfers.
Common mistake: deep Orchard and Bugis the same day
ION, Takashimaya and Far East already fill one slope. Stacking Bugis Street + Haji Lane + Sim Lim electronics shreds feet and decisions. Electronics only if you came to buy — not as scenery.
Who fits which corridor
Big luggage allowance, brands → Orchard. Cheap clothes and perfume → Bugis / Arab Street. Pre-Sentosa → VivoCity supply only, not a shopping spine. Peranakan bits → tag onto a Katong day.