@Paul *******
years ago I missed the only domestic flight out of a small airport in rural India, where they close it after dark (no lights on the grassy runway) luckily I had enough cash to get on another flight heading in the opposite direction. These places do not have ATM, or take AMEX. From then on, I always travel with several hundred. Small change for a traveler out of his/her country. Oh, and yes, don't be funny, attract attention, and dress the part. Been doing that since the 80s, in my traveling job. Never been asked for return tickets, proof of funds, or been inspected by customs (though some objected at my carrying a toolbox)