Yes, the document was accepted by NVC without issue. We're still awaiting the interview so I'll try to check back in after.
So, I had some documents apostilled and others that weren't. However, I didn't apostille them for US immigration purposes. As far as I'm aware, an apostille isn't required unless they explicitly ask you for it. We had a bunch of paperwork for our Spain visas while we were living in Spain, so already had some documents apostilled. For US immigration purposes, I turned in any documents that hadn't yet expired or that don't have expiration dates that we had already apostilled, and didn't bother getting any new documents apostilled. I only apostilled the original documents, and then I translated the document and the apostille to english myself. I'm not sure if we're technically allowed to or supposed to translate documents ourselves, but I haven't run into any issues thus far..