I just got back from having my FP done. I read on other threads on this forum that you can sometimes do a walk-in and decided to give it a shot. Although, my FP is not until another couple of weeks, i was able to walk-in about an hour ago and have it done. It took all of 5 mins.
Oct 18th - N-400 Sent
Oct 19th - N-400 Received
Oct 25th - Check cashed
Oct 25th - NOA Received
Oct 27th - Request for Evidence
Oct 30th - Rec FP Letter
Nov 16th - FP Scheduled
Nov 4th - FP Done
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You are on fast track.
all the best.