Cruise departing next week. Starting in Rome with six ports en route to Barcelona, where we'll remain for several days. Anyone been on a wintertime Mediterranean cruise before? Looks like temps will be high 40s to low 60s. Will these be similar at sea? The Viking ships are smaller, ours with passenger capacity of 990. How should a boat of that size handle the rougher seas this time of year? Any other thoughts/advice on Viking? The have a great reputation but, to our disappointment, already changed one advertised port, and eliminated another altogether.