Yeah it was the first time I learned about this policy this year as well since I now study there. I was surprised when I was handed the voucher so I decided to check my mobile boarding pass and it still showed the lounge invitation so I tried to enter.

One of the biggest pet peeves I have with JFK is that internet isn't free and there are so few seats.

In the past with my parents, I would've been allowed in (now I know why because I was with a guardian) and just always assumed that it was like any lounge.