We are taking a cruise to Baltic on Ms Amsterdam on 6/22, which probably has similar itineraries. We are going to be in Tallinn on 6/24, Helsinki on 6/27, Stockholm on 6/28 (Oslo is not included). We are planning to be on our own in Tallinn, but I am looking at private (small group) tours in Helsinki, Stockholm and Berlin (is it in your itinerary as well?). I've sent an inquiry to Port Compass (see this link http://www.portcompass.com/regionpro...?region=Baltic
) for the above tours. I am trying to see if they can offer full day tours in Helsinki and Stockholm. We will be happy to share tours with you.
We are in our 40ht, but I hope you do not mind.