The only "attraction" that I know of that doesn't take Universal Express is Ollivander's Wand shop.
I guess the kids play area do not as well (dino play near jurassic world ride, and another near minions ride), but they don't need it.
The character meets don't take it either, but I am not sure if
DAS (assistance pass) would help for that. The lines typically are not that long for them.
If you are already getting universal express unlimited, I don't see the point to get DAS. If you have the base version of universal express, there may be a good reason to get the DAS, if you think you want to ride a ride more than once.
Please note that there are two versions of Universal Express. One lets you ride each only once, the unlimited version lets you ride all rides as many times as you want. I believe they let you upgrade at the park to the unlimited, if you already paid for the once per ride version.