Having spent time in the airport in the past, the above advice is very good. However, we are all missing out on the pleasure of sniffing (god forbid) a nice durian in Geylang, or sampling some chilli crab. In spite of the purist view of doing a true run, in the future I think I will book two nights in SIN if on my own, however if with my wife I cant get away with less than a week there.