I will travel for work soon and get a visa to Singapore for a few months stay.
On weekends, I am interested in visiting Phuket, Saigon, etc nearby through a regional carrier, as a tourist.. I am not so worried about finding airfare, but moreso on the visa entry requirements which I will not have time to wait for in the USA with my need for my passport.
In Singapore, will it be easy for a holder of US Passport to get visa in person for entry into Vietnam, etc? I don't think I need one for Thailand or Kuala?