I received my retirement visa when I was in Jomtien this summer. I left Thailand in October, and the date stamped on my visa is Nov 2018. I want to come back the end of this month and stay from 3 to 6 months, not sure yet. I have 2 questions:
1. What will I need to do to renew my retirement visa? Since I have been gone 4 months, is there anything special I need to do or pay to allow a long term visit?
2. Can I purchase a one-way ticket to BKK from the states, since I am not sure how long I plan to stay?