"It means they must have showed up to enough games for folks to recognize them and not be dishonorable players.
In your case, unless you have a brother or sister that is 18+ and wants to come play that day as well, your out of luck until your 16.
I wont get into the argument over minors, the rules are cut and dried above, trust me, this wont be the last big game we do." So what you are saying that if this is your and your parent/ guardian's first big airsoft game and no one has ever met either of you you cant play in this game. and if so why are your rules set up that way and why does your face protection have to be nonflexible?