Quirrel, you don’t mention if you’re at the comfy end of the plane or not….! If you are, check a bag in. Seriously. You’ll need for nothing on board, and you can relax. It’s a long old flight! (I used to do it five or six times a year, and miss it greatly!) Also, on landing SIN airport is brilliant! Check out the butterfly garden. 🙂
When you get there, a quick tip – Ignore the “special” taxis. There’s nothing special about a Chrysler! The Crown taxis are ace, and air conditioned, which you’ll welcome.
Re business dress out there, if you haven’t been before, a tip – Wear a white t-shirt under your shirt. May seem counter-intuitive, but it will help mop up the sweat. It’s HOT and STICKY! Also, avoid blue shirts. Whites or pinks are best in that heat.
(Plenty of Singapore threads on here, but more than happy to recommend anything if you’d like)