Prior to your trip (or on the flight), it’s always good to do a bit of studying. Even a poor attempt at conversing in any local language will earn you a few brownie points for the effort, and a great ice breaker. A few recommend language resources I’ve found helpful are below.
Japanese Slanguage: Great eBook covering some of the basic Japanese slang you’re likely to hear. Study this and you’ll impress people with your skills.
Easy Thai: eBook and downloadable audio trainer. Perfect for the flight over.