No its not. Ventura is a family ship. It clearly states that in the brochures. If you want a child free ship book on Arcadia or Artemis.
We are booked for our 40th anniversary on this cruise, and as Ingle rightly says all the information you would have needed was in the brochure when you booked. So yes there is probably going to be a lot of kids on this cruise. But we have also been on the Artemis and although there were no kids, it lacked life. Hope you enjoy your cruise, we are definately going to! (Kids were free on this cruise on the Ventura, so a lot of parents would have booked saving themselves a lot of money).