We enjoy both parks, but if we had to choose, our choice would be AK. Everest is our daughter's favorite ride and my second favorite (Splash Mountain is my first). The Safari is a must-do, as well. Rafiki's Planet was a favorite when our daughter was younger. She enjoyed watching the vets work on the animals. Now she would rather ride Everest 20 times in a day. Festival of the Lion King, Nemo, and Flight of Wonders are good shows to see, too. We are also looking forward to Pandora and Rivers of Light since neither were ready during our last trip. If your girls like princesses, they can see Pocahontas at AK, but HS has shows featuring Belle, Ariel, and Elsa and Anna (Frozen Sing Along is soooooooooooooooo funny and would be a great choice if you end up at HS). And, of course, if they like Star Wars, then HS has that, too.