Russel

Thailand also applies duties, we notice this when we go to supermarkets and the prices of food imported from the West

You can do it at most 3 days before departure, my concern, in fact it is almost a certainty, is that in just 3 days they cannot process all the requests, especially in high season. If even one person is not boarded because they did not receive the DTAC in time, there will be an avalanche of cancellations, so the airlines must not be involved in any way if they do not want to be sued for damages by the stranded passengers, if I have a passport and maybe a visa you have to take me on board so let's not joke please