I tried to apply for an e visa for Thailand while I was in Vietnam. One of the required documents was for flight into Thailand. Because my flight was for Vietnam—> Thailand, the embassy wrote me an email requesting proof I was in the USA and not abroad. I was short on time and ended up not following up. But this was my experience.
I ask because I see it is mentioned that when you have too many air arrivals for tourist visa that many people recommend to come by land. I have never come by land before so I am asking if it an advised route