I'm sorry for the late reply. I have been covered up with work lately. Thanks for the heads up Eddie.
Turkey Bay has quite a few restrictions on paper, but usually that is as far as they get. I have seen alot of youngsters riding on big bikes at TB. I really don't think you will have any problems. I've honestly never heard of anyone getting stopped and having their age and CC checked. As long as the kids aren't doing anything to draw attention to themselves (doing donuts or running 40 mph through the parking lot, etc.) you won't have any problems. TB also has a spark arrestor restriction (on paper). I've been riding there since I was 16 (11 years), and have never been asked or have ever heard of anyone being checked for a spark arrestor.
I will say this...I haven't ridden at TB (or anywhere) in over a year now. Some things have changed lately, as far as finally maintaining the trails, enforcing drinking/riding, and controlling "parking lot terrors". But I highly doubt that the particulars of machines and young riders are being closely watched.
Hope this helps. If you have any other questions, feel free to ask. We used to ride TB every week and have covered every trail there a couple hundred times and have made more than half of the good bike trails there. One big word of advice....STAY OFF THE MAIN TRAIL. It is wide and fast and has two way traffic (like all the trails). There are alot of idiots that run wide open on that trail and there have been alot of head-on collisions. 99% of all injuries at TB happen on the main trail. The farther you get from the main trail, the better the riding is and the less people you see. Eddie can testify to the fact that when we ride at TB, we rarely hit the main trail and we can ride for hours and never see another bike or quad.
Corey