30 under 30 in one hall???
That's not the normal makeup of a hall. Most have 100 pubs max, of which 60% are over 40 years old. The rest have families and there are a half dozen or so that may be on the prowl to get married. Usually half of those are socially awkward or beaten with the ugly stick so they "pioneer" in order to attract an equally ugly/dorky JW male.
So we are down to 3 or 4 decent lookers. Most of those are still getting married between 18-22, simply so they can have sex. JW land doesn't change.