The stock market is open for business between 9:30 a.m. and 4 p.m. Monday to Friday. Billions of shares are traded in the American markets, making them very liquid and efficient.

Koh Lipe is considerably trickier to reach than the popular islands of Samui and Lanta (the flight-taxi-speedboat trifecta takes up a whole day) which means it’s generally visited by those serious ...