Swimmer is a paid employee of the club. Family has a summer only swimming pool membership. An extra fee is charged to be on the swim team. Swimmer is only a member of the swim team, not the pool. You are a public club that offers swim team membership to anyone for a fee.
Swimmer lives in the neighborhood, where all residents of a defined area are members.
Many clubs are not evenly balanced in age groups, but this is considered a normal part of the sport. Membership in the CSL is a full season commitment. Clubs not doing so will be subject to review of their membership status for the following year.