My wife and I will both need to extend our SETVs in March in the Krabi immigration office. Do we both need to go, or can just one person go and bring the other person's passport and fee? Thank you for the information.
TLDR : Answer Summary
Both partners must be present to extend their SETVs at the Krabi immigration office. Additionally, for a 30-day extension, each person will need to bring their passport, copies of the passport front page and visa page, the filled-out TM7 form, two photos, and a fee of 1,900 Thai baht.