I have never flown to europe for less than two weeks. Friends have. Personally I lose a day adjusting to time difference. I love extra time in each city.yes, it depends on what you afford..time if work,hotels etc. I am join VV in BCN in July. I am flying to Madrid.Booked museums and palace. Plus two dinners. My friend flying in the day before And will be a jet lagged party girl on ship. We both booked tours ..I toss in a private plus a VV one.