Tomorrow night I plan to fly from Chiang Mai to Amsterdam with a 13 hour layover in BKK. I will exit the country at Chiang Mai with a re-entry permit to keep my non-imm O visa permitted to stay date alive. My question is: If I want to book a hotel in BKK, would I have to re-enter Thailand and forfeit my re-entry permit, or is there some transit arrangement that applies in such circumstances?