Do I need to complete the 90-day reporting in person if I frequently travel outside Thailand?

I have been on a visa for the past 2 years in Thailand. Never stayed 90 days, and hence never did a 90 day report - no issues. Also nobody ever asked for a TM30

With regards to the TDAC, I believe that all countries will require some form of a digital arrival card in the near future.

It's a stupid rule. I've lived full-time here for over 20 years. I usually do the 90 day report on line BUT if I dare go away on holiday, I have to do it in person which means re-submitting copies of multiple documents; all of which they have had a hundred times already, the data of which has not varied in decades. Now TDAC is yet another chore which is doing wonders for Vietnam's tourism figures. I have a year long visa AND a multiple re-entry permit yet I have to drive in person to an Immigration office; search and pay for a parking space to give in my details again which are already on a central computer in the office.

No problem whatsoever

Don't be surprised if sometime they bomb you .

Would it be so hard to drop in to an immigration office and check that the way you are doing this is suitable to do what you do.

It's not a good idea to do things that may not fit the intentions of the rules.

Nope I've never actually had to file one either. Fly home every 2.5 months

What about your tm30 though??

Just ensure your TM30 is kept up to date, hopefully by hotel or property owner

It is called a 90 day report for a reason. If you are not in Thailand for 90 days then no need to report.

No issue at all. The need to report only applies if you have been in Thailand for 90 consecutive days. If you never stay that long then there is no need to report.