I'm pretty sure that only Mummy and HP FJ make you use lockers. Sometimes on the motion seat rides they'll ask you to leave your back off to the side, but that's not consistent. The first time we did HP FJ that line for lockers was estimated at 60-90 minutes. A CM suggested we do single rider and take turns holding the bags, so we've just done it that way ever since. Just wait in the baby swap room and switch.