My final piece of advice on Singapore is simply to give yourself half a day to go walk around the waterfront promenade of Marina Bay. Combined with the Gardens by the Bay, you’re looking at hours of architectural entertainment without spending a dime.
The 3.5 km waterfront walkway led me through the Esplanade concert hall (including free outdoor concert), a floating stadium, the Helix Bridge, the vegas-like Marina Bay Sands complex, the older waterfront hotels, and to a dramatic conclusion face-to-face with a Merlion. I was also lucky enough to time my visit to coincide with the i Light Marina Bay festival which meant I was encountering light-based installation art every hundred meters or so.
Bring good walking shoes because this area provides abundant sights for aimless wanderers like myself.