I arrived in Thailand by land, from Cambodia, on July 31. I’d like to stay until September 6. Is this possible to visit the Immigration in Bangkok and receive an extension on the 15-day visa on arrival?
Unfortunately, the visa on arrival can only be extended to 7 days at the Thai Immigration office. Should you wish to stay for a month more, then you may do a border run twice, each entry you will get 15 days or exit the country by land and reenter by air to get another 30-day stamp.