I just spent the weekend at Disneyland with a friend that came in from out of town. I drove everyday, and he stayed at a nearby hotel. One Friday, we saw Tale of the Lion King, and even though it was really hot that day, the theater got a decent breeze, and it was really comfortable. I recommend going to the show. It wasn’t super crowded, so I think even going 15 minutes before the show would be good, and you wouldn’t have to stand in line in the hot sun. We also watched the fairy tales - Beaty and the Beast, and Tangled. We just waited in a shady area until the line started, and then got in line. I didn’t pay attention to how crowded it was, but even right before the show parents were showing up with their small children to sit on the round mats by the stage. It was really enjoyable.
The queue for it’s a small world has a lot of trees, so even though it was really hot the shade was welcome. I think we only waited 15 minutes for that attraction.
We never used
Genie+ and went on the attractions that interested us.
At DCA - thinking of shady spots. I was only there until 3:30pm, because I had to go somewhere else, but even then, we found areas that were kind of shady.
It starts cooling down around 5pm or so. Once the sun goes behind the buildings it gets really comfortable.
I think the other suggestions were really good here. I have a small umbrella and forgot to take it. Drinking a lot of water was helpful. Besides the Mark Twain there is the Columbia Ship, too, and the kids might like that. The train is a great attraction. It’s about 20 minutes to go around the park, and it’s interesting, so a nice way to get off your feet.