Hi, I've read enough dining reviews to make my head spin.

The reviews of Crystal Palace and Chef Mickeys for dinner are less than stellar. Check out Trip Advisor for reviews. Kona Cafe, Liberty Tree Tavern, Teppan Endo, Biergarten and Via Napoli all get good reviews for dinner. And, DH might appreciate a break from the kid meals. I have played and played with ADR's so there is no problem getting them. You might not get the perfect 515pm, but a half our earlier or later should be easy.
I live in Miami. The intensity of the sun can be brutal from 11am until 2pm. The humidity is oppressive up until about 6pm. You can't spend all day indoors so wear hats and drink water ALL day long. You can seek out air conditioned rides or pop into a giftshop for a bit.
You vacation sounds FABULOUS!!! I wanna go!

Getting to visit Juliette Low's home to purchase the 100yr patch is Girl Scout heaven!!! Go mom!