New to forum taking a May Cruise on Rotterdam

[Queenmum]

I'm new to the forum and I have some questions for the members. My husband is taking all of our family on the May 26th sailing of the Rotterdam, sailing from Athens and stops in Kusadasi, Tripoli,Rome,Monte Carlo,Marseille,Barcelona,Cadiz,Lisbon, LeHavre,and ending in Harwich England. There will be 16 of us including 5 children all under the age of 8 yrs old. There will be an 8 yr old, one 5 yr old, 2-2 yr olds,and a 6 month old baby. My husband and I have been to Europe before but never on a Med cruise. All our cruising has been in the Caribbean. Anyone have any advice on the cruise or ports of call.