TLDR : Answer Summary
To apply for a Thai marriage visa after obtaining a Thai marriage license, your friend will need several documents, including the marriage certificate, passport, and proof of residence. He mentioned not wanting to deposit 400,000 THB into a Thai bank account, which is usually a requirement for certain visa types. However, there are alternatives like applying for a multiple-entry visa based on the marriage license at a location such as Savannakhet, Laos, which allows for longer stays without the financial deposit. Specific steps include gathering necessary documents, visiting the appropriate Thai consulate or immigration office, and filling out the application forms.