Would like to hear from anyone who is taking this Aegean Odyssey cruise and is interested in booking additional tours in St. Petersburg. I think this will be required to make the most of free time on the days in St. Petersburg. Tour company I have contacted has flat rate tours if we have 8 people who want to take a customized tour. Friends of ours did this and highly recommend it. They actually did the only tour company tour instead of their ships's offering. The company customized the tour to the time they had in St. Petersburg. If you don't have a tour ticket, I understand that you will need to get a visa to get off the ship during free time.