I am planning a family vacation to the Cape for the end of June. I'd like advice on things to do, places to see, etc. Obviously a good part of the trip will be spent on the beaches, but I'm also interested in other activities. I suppose it is noteworthy that there will be young children participating as well. I know there are whale watching tours but I am unsure if a three hour boat ride is something the children will enjoy. I'd appreciate any and all suggestions!