There are exceptions to visa exempt entries via air.
Commonly referred to as Rafferty's Rules.
Your suggestion of visa exempt entry via air and then spend say minimum 7 days out of Thailand wash and repeat.....
That would be great if it was a written rule.
However it's worse than KFC "secret herbs and spices"
There are no set rules for visa exempt via air..
Good plan is to stay in tune with platforms such as AseanNow.
Watch for any reports of issues with visa exempt at airports.
This was occuring often prior to covid pandemic and DMK in particular were giving some folk grief and in some instances refused entry.
Personally for a long stay I would suggest get the first two entries with visa exempt via air.
Followed by visa exempt via land.
Keep in mind that SETV is also available at nearby consulates. HCMC being one option.
The two per calendar year visa exempt entries is for entry via land.
Obviously if you fly from Siem Reap to Thailand it's a visa exempt entry via air.
Obviously anyone obtaining a entry visa exempt via land prior to Dec 31 will have the 2 count clock reset in 2023.
Must be a transfer from abroad.
When I first came to Thailand was not aware of the rules.
Had lot of cash from Oz and used super rich green to exchange.
As a result I ended up obtaining my non O retirement at Vientiane as the funds from abroad not an issue.
Aso for extensions it's not an requirement to show funds from abroad.
No I don't given what you outline.
Personally I use WISE.
Also have used FOREX.
Found Wise best vs other options.
You obviously have looked into it and seem aware of options.
The business forum has a sub forum "banking" with discussion about this topic.
Out of interest ..which method of transfer do you plan on using.
It's something that is often discussed.
There are threads with good info in "Banking" (business) forum
You require the 800k in your Thai bank on the day you apply for the non O.
Be aware you will need to show that money came from abroad.
The non O gives you a 90 day stamp and in last month with money having been in the account for 2 months you can obtain 12 month extension
You are 100% on the money.
The best thing the woman in question can do is ...."run Forest run"
The OP reads as a wind up.
How did she last this long.
Clearly an over controlling over drinking and self proclaimed "mean when drunk"
One example would be fly into Thailand and receive 45 day stamp and also obtain extension so 45+30.
Do two border bounce with extensions.
So 75x3......225days.
In reality could most likely do a second visa exempt via air prior to border runs.
If flying to Thailand without visa or reentry permit the airline at departure may ask for an onward flight within 30 days. (should be 45 days from October 1)
Note it does not need to be return ticket and it must be a flight. Bus ticket is not sufficient
You require 15 days remaining on your permission of stay for most immigration offices.
Some such as CM require 21 days.
That's normal rubbish from that office.
Domestic flight should be OK if you have photo ID (home country drivers license etc)
BTW checked U-tapao to Samui was surprised is was approx 2300baht one way.
Sounds like you entered visa exempt and received a 30 day stamp.
That would mean that your non O is gone.
You can apply for a non O retirement with 800k in bank account on the day you apply.
That would also require 15+ days remaining on your current permit.
As far as a visa run goes that depends where you are located.
If in Bangkok you could fly to Udon Thani and the border Nong Khai is easy straight drive from there 1 hour.
Pretty simple.
If your permit expires after Oct 1 you will receive 45 day stamp.
So why do they also have on the table income method option.
Where is the "self insure" element to a miserable 65k per month.
Where is the self insure component for married folk with minimal funds (400k) in bank for couple of months of the year.
Makes zero sense since those with a non O-A not only require insurance but also require same financials for money in bank for extensions as those with a non O.