Oof. The trips with my young child were literally the worst. They weren't a vacation at all, and I was exhausted to the point of hysteria by the time the trips were done. Do I have the marvelous memory of my little guy facing me in his Ergo, looking up at the twinkle lights in the
Disneyland trees and whispering "Disneyland...." in awe? Yes. And I also have the memories of me stopping him and his dad from arguing, from realizing it was 9pm and we hadn't eaten since lunch and I had to be the one to figure it out, and of having at least one crying jag on every trip due to being bone-tired and wiped out...
I strongly urge
@TheDailyMoo to temper expectations thoroughly, and plan LOTS of downtime. And pool time without any expectation of hitting a park later on.