What is the process for extending a tourist visa in Thailand by 30 days, and is it better to leave the country instead?

To extend a tourist visa in Thailand by 30 days at the Immigration office, one should arrive early to avoid long lines, preferably between 8:00 AM and 9:00 AM, as afternoons tend to be much busier. The process involves waiting for your queue number, submitting the required documents, and receiving the extension, which can typically take around 1-2 hours. It is advisable to apply for the extension a few days before the current visa expires to ensure a smooth process. Some individuals suggest that, depending on personal circumstances, it may be easier to exit the country and re-enter rather than extending the visa.