We did 1 NCL cruise but it was early March so we did have greater % of college kids onboard as well as younger kids.
But I think because the cruises are cheaper in price you will get a high percentage of children. JMO
Alexandr Pushkin, Carnival-Holiday, HAL-(old)Westerdam, Orient lines-Marco Polo, Royal Olympic-Olympic, NCL-Dream, Dawn-Princess, ACCL-Grande Caribe, Oceania-Insignia (3), Regatta(4) Marina (1) St Lawrence Cruise Lines-Canadian Empress
Scenic River cruise June 11,2012