I was using Korat as an example. If I am near Prang Ku I would be in Si Saket for the 90 day reporting.
So my question is can I use my Pattaya address if reporting in Si Saket ?
Hopefully I can straighten out some misconceptions and information. Your report date is 15 days before and 7 days after your due date. This was changed about 3 years ago. On day 8 after it is due your fined 2000 baht and it could can go up to 5000 baht. Kap Choeng Immigration comes under Korat Immigration and Korat is the boss. If your address is in Surin or Buriram your immigration center is Kap Choeng, BUT there is a slight change for some. If your address is in the extreme western districts of Buriram such as our own beloved Nookie you are allowed to report to Korat for ONLY your 90 day report your extension still must be done in Kap Choeng. These people are only about 60 km, from KI vs 120 Km to KCI. There are a few people that live in the upper NW corner of Buriram they are 170 km from KI and 280 km from KCI but they are only 110 km from Khon Kaen Immigration. Guess what they get to go to KKI. Now for those in the extreme NE of Surin where SiSaket is closer the answer last year was no BUT SSI was only open 2 days per week. Now that SSI is open 5 days you would need to go there and ask. The secret and to me it is common sense go to your closet immigration office be polite and explain, they probably will say yes but go in and be naughty...... SOME immigration offices will let you report if you out of area BUT NOT ALL if so and you miss your report date your out 2000 baht. As for those of us that use KCI for reporting... KCI at first had a reputation for asking for a tip by most calls that has gone way down. there is NO cost for your 90 day report. When KCI first opened they did help you fill out the TM 47 forum BUT that is in the past you most fill out your own. I know some poster have said they do request copies of your passport, from my experience it can be YES and NO. I suggest to help eliminate any cock up that you spend 6 baht and make a copy of you photo page in passport, your extension stamp (marriage/retirment) your arrival card and its enter stamp in your pp, your report slip and an address (DL or yellow house book). If you don't have these and they ask then they will make copies and charge you and maybe ask for something extra. Kap Choeng and Korat Immigration DO NOT accept 90 day mail in.
So to repeat immigration is trying to accommodate us on 90 day reporting but as I said not all. You need to the immigration office closest to you be polite and ask.
Cheers.