We are docking in Chioggia, and we need help with Venice, again. The "Venice On Your Own" excursion is scheduled from 8:45am to 4:45pm. With 3 hours of travel time, that does not give us much time in Venice unless Viking's water taxis run later than 4:45pm. Do they? Viking's phone agents can't answer that, and we need the information from someone who has been there before we can purchase advance tickets to museums, etc. Thanks.