How can I successfully file a 90-day report online in Phuket?

An expat shares their positive experience of completing a 90-day report online in Phuket, stating that it was processed within one hour when submitted 10-14 days prior to the due date. The expat mentions they have consistently used this online method without needing to visit the immigration office, despite traveling outside Thailand. A comment noted that the requirement for in-person reports may vary by immigration office.