Just returned from Europe today, re entered at swampy with a multiple entry visa. I'm being told tonight (Pattaya) that i still need to go to immigration and register I'm back in the country!! Can anyone confirm that this is the case.
TLDR : Answer Summary
Upon returning to Thailand with a multiple entry visa, it is required to file a TM30 address registration with the Thai Immigration office to confirm your re-entry. Responses in the community confirm this; however, some users shared their experiences of not registering without facing issues, leading to mixed perspectives on the necessity of TM30 registration when returning after an extended absence.