Last minute change of plans means DH may not be able to join us on our first trip to MK and AK. we have been planning for months so trying to readjust the plan. DD6 is 44 inches, so tall enough for most rides, but may chicken out. Would I be allowed to do rider swap leaving her with (very responsible) DD12? I am assuming that they would only be on their own for a few minutes while I ride - And that they would be waiting in an area off to the side of the line or somewhere sort of quiet (not out in the middle of the park?). Sorry, I have never been so having trouble visualizing how this might work. TIA.