What is the current process and timeline for getting married at an Amphur in Bangkok for foreigners?

I got married in June , tried Phra Khanong , lak si, bang rak , Bangkok noi, and a couple of others i forget. All of them said that we must make an appointment and we were told 2-3 months . Ended up paying an agent 4k who got us in at Bangkok noi 3 days later. Got the certificates after about an hours wait.

Try

They do wedding services.

My Thai girlfriend and I got married June 20 and we got an appointment about three weeks after we went there to have our documents reviewed and to schedule a date. That was Ban-Rak in Bangkok.

Also try Laksi Amphur. It's virtually across the road from CW immigration and the MFA.

They deal with a lot of foreigner marriages. I married my thai wife there all done smoothly and quickly paperwork wise.

Go to the BangRak amphur by the end of Silom road in Bangkok. They handle more foreign weddings than any other Ampur. You have to go in person to get an appointment, after they check your documents at the same time. They are very nice to work with. We just used a couple behind us for our two witnesses. We picked a pretty auspicious date after missing out on Valentine's day that just happened to be in just a few weeks, Feb. 29th. But even with that extra time, they are pretty fast on getting appointments in just a few weeks. Some people that have later appointments get handled earlier, if it is raining bad, as people will cancel, or not show up, as it isn't just foreigners going there. If time is a problem during the rainy season.

Like many things in Thailand it's all based on the Amphur who have their own rules. You just need to find one that will work for you. Keep looking