Originally Posted by
Concerto
At SIN? Can it be done before the beginning of the trip and getting on the flight to Singapore?
My experience is that most of such things (e.g. the VOA and customs declartion for Indonesia) can be done online. SIN apparently even has an app. I bit of googling around will go a long way. I usually check the Dutch foreign affairs travel safety by country pages to see what admin you have to do beforehand - guess most foreign affair website in most countries will have pages with recommendations by country.
See e.g
https://www.ica.gov.sg/enter-transit...g-arrival-card