It's a tutorial that teaches people how to judge, how to use timers (lots of people, myself included, have never used one before their first comp), and penalties and so forth.
Kinda depends. School ID would probably work. You'd never be asked for a birth certificate. Personally, I've never been asked for ID.
Thanks! I feel asking the delegate when I get there would be just a little too late to bring ID...1. It’s a new competitor tutorial. If you end up missing it, CyoTheKing has one on his channel.
3. Ask the delegate when you get there.