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Viktor,
at my experience in Africa and Asia:
1. For God's sake, no recommendations, no official contacts! (Local official permision will take a hell lot of your time and... directly bring the problems to you.)
2. You are tourist, a microworld photografer, who use the net to catch fly and to ID who is on photo = a harmless, crazy man.
3. Put material in your non-hand luggage when fly back.

With these rules I had never any problem so far nowhere.