Cab and food?
Never jump into cab or order meals with drinks without knowing the exact costs. The smallest cheapest guide books will always have these requests listed as well as other basic needs (hotel costs, how to call for police, doctor). I admire your sense of travel, how ever you were really lucky in not getting really fleeced on your adventure. That 70 dollar dinner in Thailand was about 10% of their monthly salary, and you covered that on just one meal. Be careful and continue to travel.