Ask for free front of the line Height Certificates for next visit
This is not well-known information and I have heard that it won't work every time, but when you are in child swap, if you ask a worker for a Height Certificate for kids who are too short to ride the ride, they will give them a signed certificate that will allow them to go to the front of the line with up to 5 family members the next time they come back and they are tall enough. This saved us A LOT of tears!