Never been to SIN.
Correct.
Surprised you haven't made it there yet
Yes, I tried, even payed for a visa but didn't work out for some reason.
You can check out Taipei. Awesome W hotel. Hard to find info re the kosher food but theres a member here who knows.
If you've never been to Shanghai that's definitely a must. Whatever you do, do not order tuna sushi at chabad there.