Do go to the zoo - so many animals (giraffe's, zebras, white tigers, elephants, white handed gibbons) and the animals are in quite natural surroundings for the most part - which makes for a much nicer experience (for you and the animals).
Don't expect a totally different culture - Singapore is very Americanised - full of starbucks, Taco Bell's, Carl's Jnr's, and Dairy Queen's.
Do spend some time on the 70th floor of the Swissotel The Stamford. Hubbie and I went to the City Scape bar and saw the nightlights and listened to some beautiful jazz. (Thanks for the tip - Jazi!)
Don't go without a plan - there is so much to do (mainly lots of food to eat!) Hubbie and I got a little overwhelmed, and didn't do as much as we could have. Although, it was lovely to relax.
Do visit Din Tai Fung - some of the best dim sum we have ever tasted! Excellent service - and scrumptious food! (note: this place was voted one of the top ten restuarants in the world by NY Times, and hosts many workers making the dim sum wrappers from scratch - 40 layers per dim sum!)
Do try the national cocktail - Singapore Sling - 'slovely!
And finally, DO go shopping on Orchard Road. There are so many lovely shops and if you can't afford the likes of Dior and Armani - which most of us can't - there are places for every wage earner. Note: hubby watched a movie whilst I shopped.
Final account - a fun city, but nothing dramatically unique about it. However, Hubbie and I had fun and didn't spend too much cash, so I guess that's definitely something!