Note to parents:
No need to obsess about how many schools/coaches are at any given event. If your kid can play, coaches will know. If your kid can't play, coaches will know that, too. And oh, by the way, if you're the type of parent who obsesses over how many schools/coaches see your kid play, coaches will know THAT, too.
Point is, coaches generally don't discover kids at showcases. And if they did, they wouldn't award a grant without significant follow-up and due diligence.
Attendance numbers such as those posted above are for the benefit of clubs/organizers trying to lure PAYING CUSTOMERS. (That would be you, oh obsessed parents.)