A Thai friend was recently accepted to a 3 month long English immersion program at a college in the U.S. Concurrently, he applied for a master's degree in education at the same college offering the program—and will almost certain be accepted. With regards to his Visa application / interview: (1) Does he need to book accommodation for the entire 3 months in advance? (2) Should he mention the master's application at his visa interview or would this be detrimental?
Any other tips for the application / interview would be very appreciated. He has a huge amount of savings, but I'm worried that the visa officer may deny his application since he doesn't have a substantial connection to Thailand in terms of his own family or house or anything like that.