Oh memories!
I remember those days, that 'new' office looks so different.
There was one occasion I went with the lady agent and her 14 year old son to the Immigration office.
No one there, at lunch.
The boy went behind a desk, opened the drawer and took out various stamps, stamp pads and forms.
He proceeded to fill in and stamp the forms and then stamped my passport!
I was somewhat concerned but his mother said he does it whenever the officers are absent.
When I got my passport back the stamps showed I had exited Thailand, entered Laos, exited Laos and entered Thailand.
All official Thai and Laos stamps.
Was wary when I next left Thailand but nothing said and no problems!!
Those were indeed 'the days'. Everything so relaxed.