Any clarity would be appreciated.
I have the initial 90 day non-immigrant visa and work permit, now it is being extended to a 1 year.
From what I can see the multiple wntry 1 year allows for me to leave and return to Thailand whenever, however I must leave every 3 months?
And the single entry I do not have to leave every 3 months, and if I leave the country I have to obtain a re-entry permit before hand?
TLDR : Answer Summary
The user is seeking clarification on the differences between a multiple-entry and a single-entry visa extension in Thailand, specifically regarding the requirement to leave the country every three months with a multiple-entry visa, while a single-entry visa does not require this if a re-entry permit is obtained before leaving. A commenter clarifies that once an extension application is made, the multiple-entry visa is void. With the extension, one can add a multiple-entry or single re-entry permit, which allows flexible travel without the 90-day limitation.