I read about this in another place and wondered if it was legit. Could I get fastpasses for my entire family, then just use two for one adult and one child. Then use child swap since the youngest is not 40" and under 3. So then the next adult and child would be able to go on without using their fastpasses. (Plus I know they'll let the first child on again). Then we would still have two fastpasses left and could do it again, alternatiing which older child got the bonus ride.
In doing so, the kids would get 3 rides each and each adult would get two rides using just 4 fastpasses.
In doing so, the kids would get 3 rides each and each adult would get two rides using just 4 fastpasses.