Hi, Rena!
That's so exciting that you are taking the longest of the European itineraries aboard Disney Cruise Line -- you are going to have the time of your lives as you sail along the Mediterranean coast.
Because I've never experienced this particular cruise, I'm going to give you a couple of other resources for you in order to gather the most information and to make an informed decision for your family. First of all, ask your question directly to
Kimberly on the Walt Disney World Moms Panel. She and her family took this cruise last year, and she can provide you with first-hand experience and advice.
Secondly, I would call the Travel Planners at Disney Cruise Line at (800) 951-3532 and ask them your pointed questions. Plus, ask the same questions from your air travel provider and/or your travel agent. You definitely want to get the best deal -- but you also want to make sure you don't miss sailing! My friend, Kim, will more than likely have a perspective on comparison shopping as well as timing connections.
I hope this helps point you in the right direction. I sure wish I had first-hand knowledge of your voyage! Have a wonderful day and a magical vacation. Bon voyage!
Andi