Here's the info from their web page. They will be in Hua Hin in March (and over in your area Pete in February, June and September).
web page here:Public Announcements and Messages for U.S. Citizens
Consular Outreach Dates for Fiscal Year 2012
January 6, 2011
Dear American Citizens,
The American Citizen Services section of the American Embassy in Bangkok is pleased to inform you of our upcoming Embassy consular visits in 2012. Consular staff will be available to provide services in many locations across the country on the following dates:
* Thursday, January 12, 2012 Ubon Ratchathani
* Wednesday, Feb 29, 2012 Pattaya
* Tuesday, March 6, 2012 Udorn
* Thursday, March 15, 2012 Phuket
* Thursday, March 22, 2012 Hua Hin
* Wednesday, June 6, 2012 Pattaya
* Thursday, June 14, 2012 Khon Khaen
* Tuesday, June 19, 2012 Phuket
* Thursday, September 6, 2012 Pattaya
* Thursday, September 13 2012 Udorn
* Friday, September 21, 2012 Phuket
The following consular services will be available:
* Passport renewal applications
* Notarial services
* Embassy registration and/or address change for on-line information
* Absentee ballot application and voting abroad information
* Social Security, VA or other federal benefits questions
NOTE: Applications for Consular Reports of Birth Abroad cannot be accepted during consular outreach trips.
The venue and hours of each visit will be announced individually a few weeks before each date.
If you have any questions, please e-mail: acsbkk@state.gov or call the American Citizen Services Unit at: 02-205-4049.
We look forward to seeing you during out outreach visits.
Sincerely,
American Citizen Services
U.S. Embassy Bangkok
http://bangkok.usembassy.gov/consular_o ... y2012.html
Notice on the web page that the next visit date is selectable. That's because they don't determine exactly where the venue will be until a couple of weeks before the visit so sometime in March the exact location will be determined and you will be able to find it out then by selecting the Hua Hin line.