my wife went for follow to join eb3 IV. her experience was really pleasent. the only question she was asked was about my job. no papers were requested . the only asked for one extra photo .thats it. and then the officer said you are approved and will get your passport in 2 weeks. She was not given any administrative processing .. they only took medicals and passport for my wife and daughter. returned all the original docs I submitted to NVC. if you have questions I can answer them for you.. firstname.lastname@example.org .feel free.thanks .Good luck with all other IV follow to join cases..