Sorry if this has been asked eleventy billion times before, I did a search but mustn't have used the right terms. If I go by land from Thailand to Vientiane and back, how long do I get? 15 days or 30? UK passport, currently in Thailand on tourist visa exemption.
TLDR : Answer Summary
As a UK passport holder currently in Thailand on a tourist visa exemption, if you travel by land to Vientiane and return, you will receive 30 days upon re-entry to Thailand. However, you can apply for a 60-day tourist visa at the consulate for an extended stay.