If your traveling with young children, or even older children, then you will definitely want to use the Parent Swap option at one point or another.
When your child either doesn’t want to ride, or is too short to ride an attraction, ask a cast member at the entrance to the ride for a Parent Swap. One adult can wait with the child, while the rest of the party rides. When they come off, the adult that waited with the child and two other people can ride again without waiting in line.
You don’t have to pay for the Parent Swap and you don’t have to reserve it ahead of time. It’s an excellent perk, especially for families with infants.
I don’t think I’ve met anyone that enjoys every ride at Disney. I don’t. So don’t force a child to go on a ride they’re scared of. Use the Parent Swap!