What are the requirements and experiences for 90-day reporting at Thai immigration offices?

The process of submitting a 90-day report at immigration offices in Thailand, such as in Phuket and Chiang Mai, appears to be straightforward. Expatriates have reported that only their passport is often required, without the need for additional documents like the TM-30 or the TM-47 forms. Variability exists between different immigration offices regarding required documents, as some places might request multiple copies, while others may only require the passport. Timings for completing the process are typically quick, often taking just a few minutes.