Yesterday when I arrived at Bangkok, I had completed my Arrival Card and put in my "Extension of Stay" number in the "Visa No" box. The Immigration officer asked me to change it to the Re-Entry Permit number. My partner did the same, but was not asked to change his number. Which is the correst number they require, as it seems to vary?

I always enter the Re-Entry Permit number so they'll know that I have an extension of stay on my Non-O from lots of years ago.

Mac

You enter the re-entry permit number.

I put the re-entry permit number. The immigration officer may have changed your friends card for him.