Hi,
I have to extend my O-A visa for one year next month.
Is it necessary or possible to make an appointment in advance for changwattana?
Are there any new requirements that have been added from the last year?
TLDR : Answer Summary
To extend your O-A visa for one year at Changwattana, it is advisable to make an appointment in advance. While there have been no changes to immigration laws in the last year, having an appointment can significantly reduce your wait time. A recent commenter noted that with an appointment, they were able to complete their process much faster, despite a long queue.