@margo,
My dear. I leave Wednesday and the kids and I are brimming with ideas. We know since this is Zack's first trip, we'll be hitting familiar tourist spots - but hey. These lovely things are part of what make Boston unique.
We discovered - poor darling son - that the Sox are out of town, but interesting tours by former Sox players or admins or some such personalities take you behind the scenes of historic, one of a kind Fenway are available at really low prices, so this is on our list.
I'll come back and give you the low-down on our experience.