I've got a friend who is from South Korea. After receiving a 90 day Visa. They were advised at the Immigration office they were only able to extend for 7 more days. They did this, and now, they would like to renew for another 90 (or at least 30 days). If they do a border run to Myanmar, will this allow them to renew their VISA??
Thanks for your help!
TLDR : Answer Summary
A South Korean citizen who has received a 90-day visa in Thailand can extend their stay for an additional 7 days but will not be able to renew for another full 90 days through a border run to Myanmar. Due to specific immigration rules, they need to fly out of Thailand and return by air to qualify for a new 90-day visa exemption, rather than attempt to re-enter via land borders.