When in a foreign country, you sometimes just run across a cultural signal that explains more about their current state-of-being than you originally anticipated. For instance, if you study Japanese, you'll learn a lot of words about the subway very quickly. Or, in some cities, you can usually tell how safe they are by the amount of protection surrounding a taxi driver.
Today, at the five-star hotel I'm staying at here in Bangkok, what do I find near the bar next to the candies?
Two boxes of condoms.