So we're in Bangkok, which is great and the new life begins tomorrow!

I was granted an LTR evisa and when I presented this at immigration, it was clear the lady did not know what to do and called her supervisor.

He checked it all, spoke to her and left.

She correctly wrote LTR in my passport on the stamp but when I asked her about multi entries, she suggested I needed to show the evisa document every time.

Hopefully someone on here can clarify. When I leave in Oct for a short trip back to the UK, what should I expect in my passport and what do I need to do on re-entry please?