We are off to the Baltics at the end of June and have booked 2 tours for St Petersburgh. Regarding the other countries we are visiting are the sightseeing places near enough to walk to or get a bus or taxi?
I take it for granted that you will depart Harwich June 30 on the Jewel of the Seas. And yes, there are a lot of sightseeing places within walking distance from the ship in many of your ports of call.