Yep, the extension stamp is what I meant. I understand that, just want to be well-prepared. I prefer to avoid surprises like the one I got this morning. 😅
So helpful, thank you! I wish I'd known earlier; traveling to Bangkok or Phuket before Friday is probably more trouble than it's worth at this point. I guess I'll plan to go back in a couple weeks to try for an extension and have a backup plan if that isn't possible.