Um well.... <.< >.>
Its more of a size thing really. Think of participation as a function of size and age. In this case it *does* matter. To some degree age is an important factor legally speaking. When there are minors on the field it presents more potentially sticky situations if they get injured. However, the bigger the minor is the less likely they are to get injured, and we sometimes waive the age requirement.
You should show up to a practice and ask the herald.