This is such great news, because we were going through all the rides at the parks and my little guy seemed like he was saying no as often as he was saying yes! We will have Express Passes so I wasn't too concerned with most of the rides, but Gringotts was an issue. We went to IoA a few years ago and I remember the Child Swap room on FJ (he's still too small to ride that one) - it was so nice! I liked it better than Disney's system, but I know at Disney it's a crapshoot whether you can get a rider switch pass if your child is tall enough to ride. Knowing that ANY child who doesn't want to ride can wait in child swap is such an administrative relief (I may even get to ride Hulk this time since even my bigger kids may chicken out of that one!)