@Jesper ******
When you get married in Thailand with a Thai lady, you register the marriage at the district office in the province where she's staying. This is very simple and cheap. When it's time to apply for a 90 days Non-O visa based on marriage and later the 1 year extension based on marriage,it's just copies of the marriage license/certificate (one per application stamped and signed at the district office) needed. In total 2 copies. A total cost of maybe 100 baht. That's all you need at immigration regarding the marriage, one piece of paper per application.Does this seem complicated to you? Like I said, it's a walk in the park.