Hi, I am visiting Thailand for six weeks and need the low down on this address registration business. I will be staying at the family home where I have yellow house reg doc, I will be doing short weekends away to hotels and a couple of weekends out of the country. Do I need to do anything on arrival at the airport? Do I need to go to immigration in between stays? Or do these rules only apply to non imm visa holders? I am a out of the loop since I left Bkk, I will be using 30 day entry stamps. Thanks in advance. 

You only need to complete a TM6 arrival card when you enter the country with your address on it.

Since it appears you will not be doing anything at a immigration office you do not need to worry about doing any reports.