So - to days update. Went to do my yearly extension. To cut to the chase got a new piece of paper stapled in my passport. Was told not to remove it, and I would not have to report address next year unless I moved house in the meantime. Seems my address is now "registered". Hopefully done with it for now. Except the immigration officer wrote the wrong address on the slip of paper......555.
Hoping it means that even for in and outs of the country, no need to report.
I was with two other farangs dong the same thing, who did NOT get the slip. It seems that as I was doing the extension in the province I live, I got it, but they live in a different province to where they did the extension.