Hi. Thank you for giving us an idea of the your experience in us embassy london interview. I would like to ask about the letters you brought to the interview. Did you received any letter from the embassy or consular section like a go signal or appointment letter to schedule and interview? We already got the NVC letter (K1-FTP) and the CEAC status states READY, is that enough to schedule an interview and book medical exam, filling in DS 160? Do I need the consular section/embassy letter first? Thank you so much for your help.