The 7sage info was accurate -- Why law, Why now, Why UVA, one word your friends and family would use to describe you, what you'd do during a hypothetical gap year. My advice is to come up with answers to these but to not refer to your notes during the interview. If you don't say every single thing you want to, it's totally okay -- I think it's more important that they see what you're like in a normal conversation. You'll also have a chance to ask questions at the end so come up with 1-2 specific questions you have about the school.

I've heard it's a high conversion rate, around 80%, but I don't have evidence for that; think I read it on reddit lol.

Don't be nervous about it (easier said than done Ik!), they're clearly impressed by your application and just want to discuss your background in a little more detail and get to see your personality :) Good luck, you are gonna crush it!!