Person whom it may concerned:
Please vide attached information toward Thai nationals who are planning a short visit of less than
15 days to Japan with any purpose (ex. travelling, visiting relatives, or for business purpose) might be requested to show documents at immigration to verified that they meet all requirements of entering Japan.by an Emabassy of Japan.
To mention in particular,the conformance to a requirement by Japan government as Statement or documents that prove you have the capability to pay for any expense occur during your stay in Japan (ex. cash, credit card) is important.
Best regards,