Definitely get the leash. I didn’t have one at Disney, but I have one now. My toddler loves putting on the backpack and seriously you’ll probably start using it at home too lol. She doesn’t like riding in a stroller all the time and she also doesn’t want to hold my hand constantly. Leash is the way to go!

Here’s the one I got, there’s a dinosaur, unicorn, and butterfly: Toddler Backpack Leash, 9.5"... https://www.amazon.com/dp/B07SBNYYYM?ref=ppx_pop_mob_ap_share