The baht had reached even 40/Euro briefly. I follow the move closely since November last year when baht was around 38.
Economy is not great, the prime minister changed, therefore baht should not have gained approx 9% as of today.
However most, if not all Asian currencies became stronger ag Euro and USD but what a noticed, and it might be a coincidence, the baht increased daily since the DTV was introduced and, what I hear, a lot of foreigners from all over the world have been approved…. those people have bought the baht for sure.
A visa exempt tourist needs a relatively small cash amount but DTV approved guys need money for 180 days!
Just my thoughts and yes, Thailand cannot afford a strong baht but will, or better, can they do something against it?
It’s a free currency market, offer and demand rule it.
I have the feeling that the OP, primarily, does ask for the requirements in case he wishes to keep the O-A visa.
As I understand from Marty Pollard‘s comment, it is possible to use the O-A visa for several years (6 years in his case) as long as the yearly insurance is renewed in time, the 90 day reporting is done and a METV has been bought.
Theoretically that would mean that a visit at immigration office would NOT be required except for the METV.
That‘s how I understand the „prolonged“ I-A visa or am I wrong?