I went to koh samui in September 24. Flew etihad, a lovely rep picked us up when we landed at Phuket and took us down the corridor to the vip and air crew immigration desk where they just stamped the passport very quickly, she then escorted us to our domestic flight to Koh Samui. I didn’t fill in any forms. This maybe because we landed within one hour of our domestic flight. They were fantastic, super efficient.