Great school

@Stuart ********

The warnings are placed into the computer file of the individual;

it'll be up to the next officer; however, innit?

@Albert *******

A trifle pedantic, but...

Nobody has ever gotten a "45 day visa" they don't exist.

The 45 day "free visa exempt entry" stamping in is slated to cease on April 1, 2023. Unless it doesn't, and they decide to continue this policy.

Official government website from which you may apply.

Do speak with the Royal Thai consulate in your area. If you're in California, there's one in LA.

Your wife can also gain insight from speaking to other Thai spouses in LA; she/you may be aware of the Thai Chamber of Commerce in LA and, of course, little Bangkok. 😉

Do forget about the elite visa entirely. It's a waste of money for you.

You're old enough to get a non-immigrant O based on retirement or marriage... though is your marriage registered in your wife's local Amphur?

Read up on the government website please; search this forum a bit more; this issue has been covered many times, mate.

As for travel in and out, you'll need a "multiple re entry permit; which is completely separate from any visa.

I reckon things will also depend on your American laws concerning your wife wanting to keep her green card or not...

check from that angle as well.

Good luck

You do realize you'll not only have to attend but also make progress?

Are you aware you'll also be interviewed in Thai by the immigration officers to confirm such proficiency progress each quarter, as they review your request to extend?

Finally, most "good" schools are booked up for the intro/basic levels already.

The top three schools listed here in alphabetical order.

Look into ALA, Duke, and Rak Thai schools.

background music provided for ambiance 🙃 555

Best to have the 3 proofs in any case, even with a TR visa...

hotel booking for a few days & onward travel reservation within your allowed days, & 20,000 thb or equivalent in $ £ € in CASH is needed.

Lack of funds is the most common reason cited for denying entry.

YMMV

TIT

Exactly what she can do. 👍

Hopefully the names are the same on both... with, as someone said, recognizable photos.

Always best for dual nationals to use their Thai passport to enter & leave LOS, and likewise their UK passport to enter and leave the UK.

Always best to carry both.

Obviously, she should get a new UK passport while there...

@Phil *****

Not a problem for neither you nor Angus Young, mate. 🙃 555