really, at the end of the day l advise someone that he is not registered in hotel and in private premises it is in his best interest to submit a TM30 and you said if you are only staying 60 days and no asking for immigration support don’t worry about a TM30 
if you are staying in holiday accommodation as hotel as a tourist you are almost guaranteed it done for you but as l keep saying if you are staying in a private home you will have to do it or go to a visa agent for 200-500 baht, everyone will say it’s easy to do but if you are in the tourist areas it can be hours of queues
l drive about a hour from my village of Pakham to Buriram for a two day holiday with my and do it in person and have never had any problems. The online system is still problematic in country. I can’t speak for the system outside the kingdom