This may seem a little redundant but I couldn't find a post addressing it. I arrive in Thailand on January 9th and will be staying for 5 weeks. As an American citizen is it only a 30-day stay and have to go to immigration to get an extension or is a visa and arrival good enough for me to stay 5 weeks?
TLDR : Answer Summary
An American citizen arriving in Thailand on January 9th can stay for 5 weeks under the current 45-day visa exemption. If needed, an extension of 30 days can be obtained through immigration, costing ฿1,900. Recent discussions suggest potential new requirements for vaccinated travelers, so it's advisable to stay updated on regulations.