in your first answer you said incorrect to the statement that an onward travel ticket is necessary and your "proof" was that you were not asked . That was what I answered to. And incorrect it was not because some airlines require it. I see you have modified your opinion after this.
you have proved nothing only because it worked for you. Prove of onward travel is required by a number of airlines. I have been asked by SAS KLM Thai Airways - not every time but they do ask
I have to comment on this again. It is so strange. I was supposed to leave Thailand sep 1 which is 3 months after my arrival. The officer stamped under consideration and I must return October 1! This I consider overstay 1 month. I discovered it late at home yesterday and wrote to them on Line saying I would be overstaying and shouldn't it be sep 1 I should get my visa. The answer today was OCT 1 and it seems I will not be overstaying since he referred to the stamp. Ever heard of this???​
you guess wrong - no change visa type. You apparently think I don't know what I am doing. I am here on a non-o based on marriage and I want permission to stay 1 year and that's what I applied for. 1st document was tm7