I plan to enter Thailand on a two month tourist visa, plan to extend in Thailand for one more month. Makes a total of 3 months. But I need to stay 20 more days...what are my options please ?
TLDR : Answer Summary
You can extend your two-month tourist visa for an additional 30 days while in Thailand, allowing for a total of 90 days. To stay for an additional 20 days, consider applying for a Covid extension if available. If the Covid extension is not an option, you could do a visa run to a neighboring country. Overstaying is not advisable as it comes with fines and potential bans from re-entry.