If you ever find yourself alone in a strange land, lacking any method of communication with anyone you know as well as any way to really communicate with the native people, the last thing you want to do is panic.
On the second day of our Japan trip, I found myself alone in an unfamiliar part of Japan, my entire party having disappeared. I'm not terribly predisposed to panicking about anything, but if I were that might have been the time. The great advice given by the cover of the Hichhiker's Guide to the Galaxy are kind of wasted on me, though.