I will arrive in BKK in late October for 5-weeks of training. I have an approved Non-Imm B, Multi - Entry Visa. I got the multi entry as I might take some weekend trips out of Thailand.

When I arrive in Bkk, do I need to register my address or some such ?

Thanks

You will receive 90 day permission to stay on entry. Immigration will have a record of your address in Thailand from the arrivals card you will have completed. There is nothing more you need to do. If you leave the country during your stay you will be stamped in for a futher 90 days on each re-entry.

I will arrive in BKK in late October for 5-weeks of training. I have an approved Non-Imm B, Multi - Entry Visa. I got the multi entry as I might take some weekend trips out of Thailand.

When I arrive in Bkk, do I need to register my address or some such ?

Thanks

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if you have multi-entry visa, you can travel out Thailand and come back with no problem, if your visa a single entry, make sure to stamp re-entry stamp at the Thai immigration office before you leave the country,

best of luck

Momtaz: The OP says he has a multi-entry visa ...

Thank you.