I am in Thailand on a Retirement extension of a Non Immigrant Spouse visa. Renewal date is 15 July 2021. I want to go to Scotland for three months mid June until mid September. Do I need to get a re-entry permit and if so what happens on my return. Can I apply again for an extension in September or do I have to get another visa in Scotland and start the whole process again.

Final thought, could I renew the extension before I leave in mid June which would be a month before renewal date?

I apologise in advance for my ignorance of the system but there seems to be so many different rules in Thailand.