If kids decide not to play there are spots on teams. I have also heard of kids looking for teams in the spring and there are no spots on teams as they are full. I have also heard of 4 kids who quit, did not make their HS team, decide lax was not for them and they leave a spot open.
Liberty only has a roster or 20-22 players on a team. Yellow Jackets rosters are 24 + per team.