We've never had to show our kids to get the baby swap. My ds was still too small this last time, and one of us would get on with dd. For example, dh and dd went on Splash, using their Fastpass. They just asked the CM for a baby swap for me. (ds and I rode Winnie the Pooh a few times, while dh and dd did Splash) Then, we met up when dh and dd were done, I got the baby swap, and dd and I went on Splash again. Then it was dh's turn to ride Winnie the Pooh with ds. But ds has never been in line for Splash at all. It worked the same with Space, too. However, dd freaked out when she went with me, so dh had to ride alone. Oh, well. At least he got to ride it.