You can get a 3-month single or multiple entry tourist e-visa for Vietnam in advance. You can’t extend it without leaving the country and applying for a new visa once you’re outside of Vietnam. It takes a week or two to get the e-visa from the time that you submit your application. Laws were changed in mid-August and yes, they are enforcing the current laws more now.
Thank you all for your thoughtful responses. It seems that at least initially, getting the 60-day tourist visa from overseas, then paying to extend it once before heading to Vietnam for 3 months makes good sense. Repeat as needed. Thanks again.
in Vietnam, it’s every 90 days but you have to be out of the country to apply for a new visa and that can take several days. And there’s no guarantee that you will get unlimited back-to-back visas.
Vietnam issues 3-month tourist visas, but you have to be out of the country for 3-7 days to get a new one issued. Given that, it made sense to use Thailand as a home base but not necessarily as a permanent home, if that makes sense. So I was exploring ways to make that happen easily and without committing 800k baht/pp.