So I just returned from Kawthaung with my non-B multiple visa that was issued in Jan 2018, valid until Jan 2019. The lady at Thai immigration said I cannot do a border run by sea or land again because I already did it 2 times this year. I said that only applies to visa exemption, not visa. She said no and that I will have to do a border bounce by air or get a 1-year extension (which is not possible on a non-B multiple). I asked if this is a new rule, she said no. Should I just ignore this? She told me I have the wrong visa and will need to get a non-B single plus yearly extension instead. Very confused now.
TLDR : Answer Summary
The conversation revolves around a user's experience at the Thai immigration office regarding their Non-B multiple entry visa. After making two border runs in a year, the immigration officer claimed that further land or sea border runs wouldn't be allowed, suggesting only air travel as an option or a switch to a Non-B single entry plus yearly extension. Several commenters weigh in, sharing personal experiences and historical patterns of enforcement related to such visas, highlighting confusion over the rules and suggesting avoiding that particular border due to its known issues.