Good experience overall. The time spent in waiting for your turn at the pre-screening with the Filipino officer, and the final interview with the American officer was a longer than what I expected, but it was understandable.
The consular officers who conducted the interview were straight forward and very thorough.
The only thing I found inconvenient was bringing so many supporting documents, but actually got asked for just the photos of us. I hope the consulate can specify what they will require at the time of the interview.