Can I take my 10-month-old son with a Thai passport on a Mae Sai border run?

okay, so you have no visa but an Extension of Stay, nice to clear that part. Requirements differ at immigration offices, but normally it should be copy of passport, extension of stay, tm 6 departure card, birth certificate, copy passport of the child, registration blue house book, address registration tm30 . If you want to be sure, just ask a hand out as you have to visit them anyway to cancel your Extension of Stay based on study

You went every 90 day for a border run with your 1 year visa?

or just cancel the ED visa and apply for the 60 days Extension of Stay for family visit, no need to go to the border

If you're ED visa is actually a big stamp from the immigration office with the text Extension of Stay permitted up to ../../.. make sure this is cancelled on the day you go to Mea Sai border, otherwise the send you back to cancel it first

i just wonder why doing border runs, but okay. Worst case scenario you have to ask one of the girls in a shop in the area to take care for an hour, but i guess the birth certificate will do

@Soph ***

...lets wait for added replies from

@Tod ********

or

@Robert ******

or

@Amornrat *********

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