One must exercise the utmost caution and prudence (in the face of a very dangerous, risky, or problematic thing or situation). I'm sure everything is in order, but I'd like to have my lawyer read over the contract one more time—you can't be too careful. I think you should wear one of those holsters that keeps your passport and some extra cash hidden under your clothes. You can't be too careful when you're traveling abroad alone, you know.