Believe most checks, when made, are just count of visa stamps but really no way to know in advance. From reports so far would put your chance between fair and good to obtain at locations that currently issue.

On Sep 19th I went with my normal visa service (http://www.thaivisaservice.com/) to the Vientiane office and was denied. I was originally planning to go to the Cambodia office but my agent was currently stuck there with a group of 60 people trying to get visas and also denied. I have 3 back to back visas - 2 from Vientiane (1 double/1 single) and 1 double from Phnom Penh. Quite a few people in Vientiane were denied as well and they gave us a preprinted form stating the reason for denial was people working illegally. So I just went with the 15 day and will try again on Oct 4th. If anyone else with 3 visas has been able to get one please post the office and agent you used. Thanks.

On Sep 19th I went with my normal visa service (http://www.thaivisaservice.com/) to the Vientiane office and was denied. I was originally planning to go to the Cambodia office but my agent was currently stuck there with a group of 60 people trying to get visas and also denied. I have 3 back to back visas - 2 from Vientiane (1 double/1 single) and 1 double from Phnom Penh. Quite a few people in Vientiane were denied as well and they gave us a preprinted form stating the reason for denial was people working illegally. So I just went with the 15 day and will try again on Oct 4th. If anyone else with 3 visas has been able to get one please post the office and agent you used. Thanks.

Get it in Phnom Penh, just got tourist single entry with several Tourist Visas in my passport already. Works well if you are not from Nigeria or Philippines...

On Sep 19th I went with my normal visa service (http://www.thaivisaservice.com/) to the Vientiane office and was denied. I was originally planning to go to the Cambodia office but my agent was currently stuck there with a group of 60 people trying to get visas and also denied. I have 3 back to back visas - 2 from Vientiane (1 double/1 single) and 1 double from Phnom Penh. Quite a few people in Vientiane were denied as well and they gave us a preprinted form stating the reason for denial was people working illegally. So I just went with the 15 day and will try again on Oct 4th. If anyone else with 3 visas has been able to get one please post the office and agent you used. Thanks.

Get it in Phnom Penh, just got tourist single entry with several Tourist Visas in my passport already. Works well if you are not from Nigeria or Philippines...

What documentation did they ask you for?

On Sep 19th I went with my normal visa service (http://www.thaivisaservice.com/) to the Vientiane office and was denied. I was originally planning to go to the Cambodia office but my agent was currently stuck there with a group of 60 people trying to get visas and also denied. I have 3 back to back visas - 2 from Vientiane (1 double/1 single) and 1 double from Phnom Penh. Quite a few people in Vientiane were denied as well and they gave us a preprinted form stating the reason for denial was people working illegally. So I just went with the 15 day and will try again on Oct 4th. If anyone else with 3 visas has been able to get one please post the office and agent you used. Thanks.

Get it in Phnom Penh, just got tourist single entry with several Tourist Visas in my passport already. Works well if you are not from Nigeria or Philippines...

What documentation did they ask you for?

None. Used agent.

http://www.thaivisa.com/forum/topic/499933-tourist-visa-in-cambodia-my-experience-today/page__st__50__p__4764735#entry4764735