They don't ask for id or anything. You just walk in and start playing. You really don't have to talk to anyone if you don't want to. You can buy your card for the games from a machine. I go all the time and I've never been been asked. My daughter takes her kids and she under 21 and goes goes a lot.
Though, even during the day someone under 18 must be accompanied by an adult over 25. After 11pm everyone under 21 are not permitted
That's after the under 21 curfew. After 9 pm,no one under 21 allowed
Thanks! Your answer is awaiting moderation.