Rami.

1. Helena, MT USCIS office - Yes, grandparent required to attend. 
2. Orlando, FL, USCIS office - Yes, grandparent required to attend.

@SirenDoll  @CeciBol@Kate987@Rami. @OmarStuck

I found out an interesting detail when attending my local Embassy appointment for submitting my passport applications for my children. The authorizing officer who took our oath was explaining the process to obtain SSN for our children, which will now require another trip to the US as this will need to be done in person, our closest office is Great Falls, MT he highly recommended I call the office and inquire with them on the process. He gave me their number to call. He said the process will VARY from state to state, meaning there are general rules and processes for these applications BUT each state's office has varying intricacies relating to how they handle things such as if the grandparent needs to be present for the USCIS N600K citizenship interview! I found this very interesting and feel it would be an incredibly valuable resource if we could somehow narrow down which offices require grandparents to be present vs. not and create a list for others. 

Choosing an office based on their wait times AND whether or not the grandparent needing to be present would be an amazing resource. We already can know the estimated processing times here: https://egov.uscis.gov/processing-times/

Would you all be able to share which office you got your interview at or are scheduled to be at? AND share whether or not the officers at the office have said yes or no to grandparent needing to be present during the interview?

I'll start:

1. Helena, MT USCIS office - Yes, grandparent required to attend. 

Hi Rami

>> is the presence of the grandparent essential during the interview in US or the child's parent is enough? 
 
Just thought I would add my experience on this as it seems to be different to other people's. We haven't had our interview yet (still in the process of scheduling it) but our email from the USCIS Officer states that the qualifying grandparent does NOT have to attend the interview. 
 
I am the US citizen parent. My dad is the qualifying grandparent and we have used his physical presence in the US for our children's N-600K applications. But my dad, the grandparent, is not required to attend the interview. This is from the email inviting us to schedule an interview (email is from May 2023): "The U.S. citizen parent and the child are required to appear for the interview; the U.S. citizen Grandparent is not required to attend."

Interesting! I think the best practice is to ask the officer once they reach out via email to schedule the interview. It doesn't hurt to ask, and seems vary from office to office!
 

Hi Rami,
> is the presence of the grandparent essential during the interview in US or the child's parent is enough? 

My experience was that the US citizen grandparent was required at the interview.
I am a US Citizen, but did not have enough US residency to qualify. My father was necessary to attend the USCIS interview. He is US Citizen, and had the required US residency.