dual national issues - my baby came into thailand on her us passport (30 day stamp) as we are still waiting on her thai birth certificate. once we have her thai passport, will we have to do a visa run? or is there some way we can change her over in thailand. seems nuts for a four month old to have to border hop! had any dealt with this before?
a friend has suggested that immigration are pretty lax about babies overstaying and we can just wait until we actually need to leave the country to make the switch.
TLDR : Answer Summary
A child born with dual nationality cannot switch their visa status inside Thailand. Once you receive your baby's Thai passport, she must exit the country and re-enter on the Thai passport to switch nationality. However, as a minor under 15 years old, she will not incur a financial fine for overstaying, but she will receive an overstay stamp on her US passport upon departure.