I need to stay 90 days but cannot get a 60 day tourist visa before arrival.
If I arrive via airport and recieved the 30 day Visa exempt stamp (USA passport) is it better to:
Extend for 30 days at the immigration office in Chiang Mai and then do a border run to Mae Sai for a land crossing 30 Visa exempt stamp.
Or
Arrive on flight, do a border run at Mae Sai, and then extend at Thai immigration in Chiang Mai?
I'm not sure when is better to do a border run.
This is my first time staying longer than 30 days in Thailand.
Thanks!