What do I need to know to get a 30-day visa extension in Jomtien, Thailand?

To obtain a 30-day visa extension in Jomtien, an American must prepare several documents including their passport, a passport-sized photo, copies of the passport data page, the current entry stamp or visa, the TM.6 departure card, a filled-out TM.7 application for extension, and 1900 baht for the fee. It is also advised to bring a signed copy of the landlord's ID for the TM30 submission. The process typically takes a couple of hours, depending on the number of people waiting, and approvals are generally issued on the same day. If needed, there is a copy shop nearby that can assist with forms and copies.