If 16 year olds can apply because they are looking to cast a season down the road after they turn 18 - fine.
but do not send a Minor to play this game. Not unless it’s going to be like the Boy Scouts Summer camps with tents, cots, sleeping bags, food, shower and bathrooms. And everyone being near in age. They are children.
Do not put them in with Adults. Skupin and Brian come to mind anyone? Even without people like them, minors look to adults as authority figures. That puts them at a disadvantage in the game. And could seriously ?!’$ the rest of their life.