Actually travellers transiting through Bangkok may like to note that i bought a ticket to Shanghai via Bangkok from Melbourne with a day between connections a couple of months back .. I planned to go into Bangkok and stay o/n, relax, there before going to Shanghai .. it cost me the airport tax of 700Thbht ( not an enormous amount) but the hassle of now having to go to through an unknown proceedure to pay it was disconcerting ( plus having a Thbht cash) .. I was advised I should have stayed in the airport hotel inside the airport..but on the return leg with 2 days stay in Bangkok I had no exit tax!!. I think Thailand should consider giving free of airport tax, exit passes lasting at least 24 hrs.. The taxi fares and hotel charges etc in my opinion, would easily give them extra revenue to recover any loss in taxes.