Is the visa extension in Thailand usually approved for an extra month?

The question pertains to the likelihood of getting approved for a 30-day extension of a visa exemption in Thailand. Based on community comments, it appears that applying for the extension is generally successful, with only a simple paperwork process required. Credit to local immigration offices, applicants need to be within 21 days of their visa's expiry date, provide a recent photo, proof of residency, and a fee of 1900 Baht.