Yes, I arrived in Thailand in December with no outbound travel arrangements. I’ve since taken a train to Malaysia for 1 day and returned with no issues. As well as paid for extensions twice, on the back end of each entry. Not once have I been asked for proof of onward travel.
I don’t know any Germans. I have a Polish friend who did a border bounce with no problem. She went through a visa agent though because she was living on Koh Samui and it was cheaper for her to travel with a group.
My friend from the Netherlands did her border bounce solo. She went two weeks before me as we were both in Hua Hin. She took the night train to Malaysia which gets in during the morning. She tried to take the night train back home the same day she arrived and they told her no, to spend 1 night in town and come back the next day. No issues with that. So when it was my turn to go, I stayed 1 night. I’m a U.S. passport holder.
I did a border run and I’m here again on Visa Exemption. I took a night train to Malaysia, spent 1 night and then returned. Within a week of returning, I went to the local immigration and extended by 30 days so I didn’t have to worry about it later. They are happy to take your money at any time.
I can do 1 more land border reset, then I’ll have to fly. I plan to use a visa agent for the next border run so I can return the same day.
This year, I’ve extended twice in Hua Hin immigration office in Blueport Mall. You only need your passport and ฿1900. They give you a form to complete while you wait and the immigration officer takes your picture with a digital camera when they stamp your passport and take your money. Super easy. Hassle free.