Kids are not really catered for on Oceania, so it would be up to their families to provide meaningful activities. We have sailed with kids in the past on Oceania though, and can't recall a single problem. We love kids, so it certainly wouldn't bother us to sail with young passengers again. Yes, Viking has a policy of no kids under 18. Our last cruise was a b2b Viking cruise on Orion. Magnificent vessel, beautiful public spaces, great entertainment, comfortable bars, BUT food is nowhere near Oceania's standard of cuisine, and the MDR is more like a vast cafeteria. Specialty restaurants were much better, particularly Manfredi's, but overall, the food was way below par. We like seasoning, but the food was delivered overly pre-salted to such a degree that many passengers were complaining of swollen ankles. Staff were all lovely, but lacked that gliding presence of Oceania's restaurant staff. Others may totally disagree with my observations, of course.