Hoping this is an easy one. I have a non-immigrant B visa which is a single entry one on a British passport.
I need to leave for a week, do I need a re-entry permit and do I pick this up at the airport BEFORE I leave?
Thanks in advance for any help.
TLDR : Answer Summary
If you hold a single entry non-immigrant B visa, you will need a re-entry permit to leave Thailand and return without losing your visa. This permit can be obtained from the local Immigration office or at some airports before your departure. Ensure you return before the expiration of your 90-day stay as stamped in your passport.