I think that if you are married and the father has a Thai passport it is just a matter of registering the baby. Usually this is done by the hospital. Probably it will be more complicated if he has no Thai passport or if you are not married. (I assumed that you will give birth in Thailand...)

@Frédéric ****************

But the mother already and always has custody. The father can get it, but he having it doesn't say anything about the status of the mother.

@Pui ****

"The airline is responsible for ensuring that the passenger meets the requirements for entry based on the passport presented to them for check-in." You can show both passports, no problem.

It doesn't matter what is in the ticket, if you have a passport that matches the info. And despite what others say above... There is no connection between the ticket/passport you use and the passport you show at immigration.

@Tod ********

You do not need b/s tickets. The Dutch consulate says you need insurance for the duration of your stay, what you prove with a ticket. Not the duration of your visa. And some airlines allow you to change the dates of your flight for free. You buy a ticket showing that you come for 1 month, and you can change the dates later. You can plan to do this, but you can also just change your mind.

Some airlines offer free ticket changes. With Etihad you can change the date of your ticket for free. That makes things a lot easier.

Most jobs in digital marketing in Thailand require knowledge of the Thai language. Not all, but most do. You are also not allowed to work on a spouse visa. You will need to apply for your own (independent from your husband) work visa arranged by the company you are going to work for. Another option is to find a job in your home country that allows you to work remotely (in Thailand) and keep silent about that.

@Peter ********

Je zou kunnen proberen ze even te bellen. Als ik bel dan zijn ze doorgaans erg behulpzaam. Het enige dat je nodig hebt is een afspraak van 1 a 2 minuten. Dat moet eigenlijk best wel tussendoor kunnen.

"generate some income " You should specify that more clearly to get a good answer. Working online is easy, if you know how. Finding a job here is much more difficult, unless you are a teacher or so. I followed the job market for some time. In several years I never saw one job that could be ok for me and where they didn't ask for knowledge of the Thai language.

@Bobby *******

That visa agency costs money only once.