Just ask, can't hurt to try. I mean at least you're with your brother. If it was some random kid off the street I would be hesitant but if your brother is down to earth and can build some rapport with the other guys I don't see why they wouldn't not let you play, that is unless they do have a strict 18+ only policy (even then sometimes exceptions can be made, ie. an established player decides to bring their kid/nephew/niece out for a day of playing or something). Even if you can't play a year is a lot better than how long I had to wait.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE