We've used one in the past in Disney World, Dollywood and Universal Studios. Yes, it nice to skip the longest lines, however I find it more useful for being able to carry supplies all the way. We don't let our girls ride with their insulin pumps on, so one of us waits in the "waiting room" with the pumps and supplies and rides with the girls. then we switch out and let the girls ride again with the other parent. Also, I think if you're doing one day at a park, it's not so bad to wait in lines, or use a fast pass and run all over the park trying to make your "times". However, after 3 days of doing this, my girls were wrecks. I couldn't keep their sugars up for anything, and I really needed the passes. That was the first day I used them, and now I get them every time because it made our day so much easier.