I'm jealous. We have the same tour in July. In Barcelona the ship docks right at the end of the most popular street Las RAmblas. In Venice I believe it is a tender in but they are near the Grand Canal and take you to St. Marks. Please let me hear about your trip when you return. In Venice be sure to take the Secret Itineries Tour at the Doges Palace. They do it in English a couple times a day and well worth it!