Please tell me I don't have to manually tag four thousand faces.

You don't. Manual tagging isn't part of the workflow at all — the entire point is that the AI does the grouping automatically. You upload, the system indexes faces in the background, guests self-serve from there. Compare that to the old way of delivering event photos, where photographers spent days tagging or fielding individual requests. The absence of manual tagging is one of the biggest time-savers Snaptide offers, and it's the reason a solo photographer can deliver a 400 GB wedding without hiring a virtual assistant.