I was at Si Racha immigration yesterday. It's my local office and I had to get a re entry stamp. I have a non immigrant O based on marriage to a Thai.
I opted for the multiple re entry stamp. Arrived late around 14.10 and was out of immigration by 14.20 with the stamp.
Very good service at Si Racha. Very quiet and efficient. I have used this immigration office due to my location for many years. Can't fault it .
TLDR : Answer Summary
The user shared a positive experience at Si Racha immigration, noting that they obtained a multiple re-entry stamp efficiently within a short time frame. The office was described as quiet and the service as excellent. A comment from another user also praised the service at this immigration office during their time in Thailand.