I would take the night time safari your first night. The botanical gardens are a must. I would also take a general tour. I would defnitely stop at Raffles for a Singapore Sling.
Singapore is fantastic....you will enjoy it.
"The test of a first rate intelligence is the ability to hold two opposed ideas in the mind at the same time and still retain the ability to function."
F Scott Fitzgerald
Seven Seas Voyager (30nts) - Dubai - Cape Town - Nov 14