Tell that to the guys who HAVE tried that in the past and got raided / shut down / prosecuted / fined / thrown out of Thailand for doing exactly that - and and to be fair to them they WOULD say clearly that they weren't even promoting sex tourism in the first place and it was only the presence of ordinary gay magazines and pictures lying about their office that got them brought before the courts - but even then they WERE still raided and shut down in a speedy fashion.