if you are at the hotel: just your passport because you will be found in the computer system
if you rent a condo: your rental contract, a copy of the owner's identity card.
if you are invited to a Thai house by friends or by your girlfriend: a copy of the identity card of the person holding the chanotte and a copy of the chanotte and copie Tabien Baan.
I come back from the immigration of chiang mai, in amnesty which ended on October 31 for me because my embassy has not delivered a letter for several months, have asked me to return to immigration but this time next to the airport on
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/30 of this month. I showed the letter you posted here, they told me he wasn't taking it for the moment ...