And honestly, it's not just to get on HE. Before HE existed, we got park2park. Our kids were younger then, and didn't do much in the way of thrill rides, so we walked between parks every day to be sure they had plenty to do. We'd start with Transformers and Men in Black on the US side, hit up Springfield, get lunch, and then head to IOA for Spiderman, Suess, Poseiden, Jurassic Park, etc. We would do water rides at IOA one hot morning, go dry off and change, and we could hit either park later in the day.
So look at the rides your family enjoys, and see if it doesn't make sense that it's more than just being able to ride HE; it's getting the best of each park any day you go!