Border run in Ranong - change passport?
I am about to do a border run via Ranong (exit and re-enter thailand same day) and i would like to re-enter thailand with a different passport i have from a different country (not in order to hide from thai authorities the fact that i have another passport, but for other technical reasons not pertaining to the thais, i can just tell them it's a question of saving pages and using the passport that expires first, if that helps).
I heard this is not possible? Anyone knows anything?