When leaving Thailand on a non-b, at Savannkhet, with the intent to return with a visa exemption, is there a minimum time to wait after passing through the Laos border to return back to Thailand? I had a friend a few months ago say he just went and drank a coffee and came back. Is that safe? Risk of being denied visa exemption if returning too soon?
I've only used one visa exemption and that was 3 years ago. The rest of my time in Thailand had been a non-b.