Flying Sushi from Bangkok to Cha-am and back, paperwork I wish I knew

We flew Sushi with us to Chiang Mai in March, and the paperwork was the part that stressed me out the most. Not the flight itself, the paperwork. Everyone tells you to bring the vaccine card, but that is not enough for the domestic airline. What they asked for was a health certificate from a vet, dated within 10 days of the flight. Our vet near Cha-am wrote it in Thai and English, and the airline wanted the English version with the vet's registration number. Get the stamp, do not trust the printed one only. Rabies vaccine must be valid on the flight date, not on the day you book. We found out the hard way because the booster was 3 days late. Sushi is a Pomeranian, so the airline also checks the crate size and the cargo temperature. In March it was fine but in April they would not take brachycephalic breeds. We were lucky. The carrier we used had ventilation holes on 3 sides and a soft bedding inside. She cried for 10 minutes at check in and then slept the whole flight. Bring a small treat, a towel that smells like home, and do not feed her for 4 hours before. Water is ok. Hope this helps someone, the airline website is not very clear about pets.