Will be open first for limited risk tourist, from Asia
For Europe..
I guess not before middle of next year..
And I don't think so the quarentine will be stop before a vaccin will arrive.
Working as Chief, many restaurant are usually looking for in Bkk (before COVID), But for now .. hard to find any job in Thailand, only expat working for international company have still chance .
I work for expat moving in Thailand ..
So I can tell you ..
For now .. almost nothing happens
2 of my customers just got approval to enter in October, from Italy and UK