Thanks for the info Merrykalia it was helpful.
I know the timing is not the best, but it is when we can go. Work and kids' schedules and family obligations all interfered with the timing. I was thinking of hitting the Smithsonians during the hottest part of the day to keep everyone sane.
I was thinking the trolley in DC would be helpful b/c it would mean less walking in the heat. But, it's pricey and if I can avoid it I would like to, provided I don't make everyone miserable by walking around when it's 100.
You don't think it's worth the money?
