Had 8 am appointment, started queuing around 7.15 (and were 4th in line - by 7.30 there already was quite a line). Were called up for the document check around 8.05 as first I number and then got our "interview" a around just before 9. The IO just asked me to sign the DS-230 second part form and asked me when we would get married. As I just had bad news with regards to close family in Germany I explained that I would be spending a few months with my relative and she offered to put the visa on hold until I knew exactly when I was going to be able to travel, but left it up to me if I wanted to do that. Decided to do the visa now anyway and paid for delivery - out again by 9.15.
Was very pleasantly surprised how accommodating they were about my circumstances and no trouble whatsoever. Got a text 2 days after the interview that DX Secure has my passport and is going to deliver 3 days after the interview.