Planning a 1 week Norwegian Fjords cruise this summer with our 3 kids. I think P&O looks better option as it seems to have a much better itinerary (going to some really stunning places) whereas DH thinks MSC looks better as there are water slides on board for the DCs! To me MSC looks nice and agree about the waterslides being a big plus, but doesn't have anywhere near as good an itinerary as P&O, not going to any of the really spectacular "wow" locations.
Any tips?