You cannot extend an entry stamp on a tourist visa or visa-exempt scheme for Non-immigrant based reason. You have to apply for a new in-country initial Non-O visa based on being over 50.

This is a new visa application, your 90 days would start on the day of visa issuance, usually after an under-review period of 21 days in CM. 90 days of a new permitted-to-stay stamp will not be added like a tourism extension.

In Chiang Mai, you need to have 21 days (actually 15 working days) remaining with your current stamp to be able to apply for an in-country visa.

This is a bit old general requirements list for an in-country Non-O retirement visa, not Chiang Mai specific. You better check with CM for their latest requirements list as they have their own list for sure.

/9.FOR-RETIREMENT-PURPOSES-50-YEARS-OLD-NON-O.pdf

You cannot "renew" your visa. You can apply for a 1-year extension based on retirement.

It depends on the immigration office to which you apply for an extension. Most allow extension applications when you have 30 days or less with your current stamp. Some accept applications with 45 days or less remaining. There are one or two offices that accept extensions only within the last week of your stamp.

Please check with your local immigration office for their policy.

@Matt ******

, each embassy/consulate has their own holiday schedule. Please check their website for their calendar.

@Michael ********

, those visa application on eVisa have to be done when you are physically in that country where you want to apply through. Of course Thailand is not eligible as "current location". You have to upload entry stamp to the country and/or proof of where you are staying in that country.

@Vlad ******************

, Religious-related visa is Non-R/Non-RA, not Non-RE. Most AI is using the information on the internet, which contains a lot of incorrect information still, sadly.

There is no problem with that stamp. "Non-RE" in the VISA CLASS field of the entry stamp means you entered on a Re-entry permit with a Non-Immigrant visa/extension of any type (B, O, ED, etc), in your case with an extension based on employment.

You don't have to worry about it.

Q. Can I enter Laos then bounce back into Thailand with the eVisa approval email and still receive the Non O?

-> Yes, you can bounce at one of the borders, by land/sea or air, to "activate" your newly approved Non-O as eVisa.

Unnecessary additional, check for the last time just before you go through passport control in Thailand to see whether it's approved or not during the trip.

There is no rule on maximum number of days you can be out of Thailand. Technically, you just need to be in the province on the day you can apply for an extension, which means the last day of your current stamp. But practically you may need a few more days to prepare documents for application.

For example, it wouldn't be a problem to leave Thailand immediately after you get a 1-year extension and re-entry stamp and be back in the last 5 days to prepare and apply for the next extension.

@BodyMind *************

, you can apply on eVisa system by yourself through consulate in US using your US address

@Albert ********

, OP is talking about his mother. DTV dependent is not available to a parent, it's only for a spouse and children.

It depends on the embassy whether they require applicants for DTV dependent to have financial proof for each.