I have never needed one. I used to print those out from the internet. They seem pointless. Police ask for ANY driver's license, car rental places ask for ANY drivers license, no body asks for the International Drivers Permit (notice its not a license). It's a document that says you have a license from someplace.
I am have a questionable visa history and I have not been hassled at immigration yet. They're pretty flexible. I recommend travelling with the 3 proofs. A visa is a good idea.
Yep - you cross immigration both ways. If you choose to do this, I would ask this group for recent experiences. The last time I did it, it was a couple of years before Covid.
I walked across, there is actually a bus for the
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mile stretch, from what I remember. Go through immigration, there will be a shopping center of sorts. Get yourself a snack, come back through. Probably start-to-finish 2 hours.
As I understand it, you should be eligible for 1 year extension, but I am not that familiar with retirement visas so maybe not.
However I have done a few border bounces. You can fly to Lao, or if you want a little adventure, you can fly to Udon Thani and make your way up to the border and cross on foot.
Unfortunately I am not too familiar with retirement visas. I have a friend that is on a retirement visa and he told me that the insurance requirement is different for people who get the non-o visa from their home country vs getting the visa while in Thailand. I *think* there is no insurance requirement if you get the visa in country.
You can do all the paperwork yourself and save yourself a few dollars or you can hire an agent and save yourself some frustration.
I would recommend coming on a tourist visa. Hang-out for a while and talk to some expat locally to get their recommendations.
Tea money (Bribes) is not are not required but do you really want to make several trips to the immigration office, spending the better part of the day there? Immigration can be easy or difficult - how much is your time/money worth to you.