What should you do for your 90-day report when moving to a new province in Thailand?

When moving to a new province in Thailand, you should visit the local immigration office in that province. You will need to file a TM28 form to report your change of address, and either you or your landlord must file a TM30 form to notify the authorities of your residence. After completing these steps, you can use the new immigration office for your 90-day reporting and future visa extensions.