1. First time L1B Blanket (fresh)
2. Have Canada PR + Had Previous H1B(expired), B1 etc visas.
3. Tried to take appointment at
https://ais.usvisa-info.com/en-ca/niv/. To my surprise, after answering all questions correct, it gave drop box option for L1B Blanket (first time). This was confusing for me, because first time L1B Blanket will have to have interview.
4. Anyways, just followed courier instructions with drop-box couriered all documents.
5. After 10 days, DS-160 status changed from "No Status" to "Refused".
6. In couple of days after, received 2 emails back2back, email to attend in-person interview and interview slot was booked by consulate for date within next 1 week.
7. Attended interview with family, paid $500 (Credit card only please). I took 500 USD cash, but officer wanted credit card. Few regular L1B blanket interview questions and done for the day.
8. On interview day, later in the evening, status changed from "Refused" to "Admin Processing".
9. Next day, status changes to "Issued" and received passport shipping email. Received passports with stamp within 2 days after interview.
In Summary, If you filled
https://ais.usvisa-info.com/en-ca/niv/ correctly, and it it send you to courier instructions. Dont think too much, just follow instructions and courier the documents and then the US consulate will lead you though the process. In worst case they will book an appointment for in person interview within few weeks.
Another note(though repeated email exchange with OttawaNIV) , it looks like Canada US consulates are working hard to prioritize work visas. They say it takes from 4 to 6 weeks, in my case I got everything done within 4 weeks.