This looks like a lot of fun! You are sure cramming a lot of stuff into a couple of days (but I guess that's what people do on vacation, isn't it?). Let me see what the kids are up to and maybe I'll be able to meet you somewhere. you've got a great itinerary!
That would be nice to have some company. Yes it's a lot, but I used the museums time required guidelines, and tried to mix things that need walking with things that involve sitting. I've also left all but 2 evenings free to recover, and have even packed heating pads for sore muscles.
you've got a great itinerary!