It is available on most rides. Make sure to talk to the CM at the entrance to the ride. Each ride has a different protocol.
My DS really likes this because he gets to ride twice. My DD is too afraid to ride some of the big rides, so the parents take turns sitting with her. DS rides two times. No parent wants to ride alone, if they can help it! Oh, the sacrifice!
You might want to split up. That way, no one has to wait.
Marie