Employment Based Greencard

I just got my interview notice. However the interview is scheduled in Georgia where my company headquarter is, and I am in Florida! The reason behind was all my applications used HQ address so our company immigration office oversees all status of all applications, while I am working in a department that is in Florida and of course I live in Florida. Once we realized the interview is ready to be scheduled, we requested address change on line. On the same day, I went to local USCIS center (without appointment) and asked the officer to change the address though his computer and was told everything should be fine. Then quickly after we requested address change, we received on line status - interview was scheduled. It's weird that it's within a week changing from interview ready for schedule to interview was scheduled, which I know for most people it takes one month or a few months. It would have been a good news, however, as I worried it was scheduled in Georgia but not in Florida!

My employer asked me to go ahead for this interview and said if lucky, they may approve my interview and ask Florida to issue my GC, and worst case will be the officer to manage the case transfer which may be much faster than giving a call to USCIS for reschedule. My colleague had the issue who was in same situation and after the call to USCIS for rescheduling interview in Florida, her case has gone nowhere for about half year.

If's quite frustrating as we have to spend a day or two flying there with very little hope. Appreciate any suggestion or experience you can share. Thank you guys!