It was a really smooth process. The was some decent waiting time and I was asked for original copies of my civil documents (birth certificate and divorce court order), which I had because I had inquired about extra documents to have through email beforehand. The person who conducted Ted the interview was really friendly and easy-going and he tried to reassure me when I seemed stressed. At the end, I was told that all K1s go to administrative review but it would be fast and they rarely call people back. Overall process from entry to exit took around 2 hours. I checked status on caec the next day and my visa was approved. On the 20th status changed to issue and on the 21st I received my passport and packet.