You can apply for Non O in Thailand

@Philip ****

a Non O is a 90 day visa you can extend from this based on marriage /retirement at most immigration offices or leave and come back till it expires getting 3 months on arrival ( no insurance required).

A Non O-A is a 12 month Visa and you will get stamped in for 12 months or the length of your Insurance every time before it expires.

Used wisely you can get 2 years from the 1 Visa.

You can also extend O-A based on marriage/retirement in Thailand but will need Insurance.

If you let it lapse you need to leave

@Philip ****

no you cant change from Non O-A to Non O in Thailand.

@Philip ****

you cant renew a Visa.

You can get an extension based on marriage, retirement.You cannot change from Non O-A to a Non O.

If you extend a Non O-A you will need to meet the Insurance requirements

You can apply for a Non O in Thailand

You can apply for your extension anytime during your last month of stay.

Why not apply in Thailand when you get here?

You can apply in Thailand

You need to apply for extension with 2-3 weeks left on your Non O visa .