The majority of the Boosters are the adult parents of the band kids. However, there may be a number of actual band members (kids) who might want to participate in the boosters as well. There were a few at the last meeting I attended.
I suppose, since I can't know for certain exactly how old the participants might be, I should continue with the COPPA warning on the registration page. Everyone who wishes to participate in the forum must request access via email. They are manually added after their identity is verified. It's a local forum only.