I entered Thailand and assumed I had to 'do' the TM30 (I'm on a 12 month visa extension (family)). Accordingly, I sent my wife to the Immigration to do so, but she was told that it wasn't necessary, as I have had a family visa for quite a number of years.
Is this so, or has my wife misunderstood.
TLDR : Answer Summary
The necessity of completing the TM30 form depends on the local Thai immigration office's policies. Generally, foreigners must report their address within 24 hours of arrival, regardless of visa type. Even if you have had a family visa for several years, it is advisable to confirm with your local immigration office.