Do I need to report anything when entering Thailand again on a Non-O visa, and how does the 90-day reporting work after leaving?

The individual inquired about reporting requirements upon re-entering Thailand on a Non-O visa and the handling of the 90 days reporting rule. Key points from the conversation include the necessity of a TM30 filing within 24 hours upon return (though often overlooked), and that if one exits Thailand before the 90-day period is completed, there is no need for a report until they re-enter, at which point the 90-day clock resets. Additionally, the importance of obtaining a re-entry permit prior to leaving Thailand was highlighted, especially for frequent travelers.