@Dave *********
you tried to make a post about Chonburi so we'll go with the idea that you're using the Jomtien immigration office.
For your first 90 day report they'll wanna see that you're actually registered as living there (as in you have a TM30 receipt from where you stay) and your passport. that's it
You can apply for a 90 day report 14 days before down until 7 days after the due date, which I said would be 89 days from the date you stamped in to the country.
Check your message requests I messaged you too