Actually, at any showcase, if your kids want to be seen, they must do the legwork and contact the coaches. I have been told by a college coach that, unless there is a kid who has been in touch with them on a team, they really have no reason to watch that team. They have many other kids on many other teams playing many other games, to try to fit in watching. They don't have the time or luxury to just wander around hoping to stumble across some suitable player. So yes, in this case, I would blame the coaches and players for not getting looks.