Is this a possibility? My bf, son (4) and I wait in line for space mountain. We get to the front of the line, BF rides while I wait with my son who will 'not' be riding. When bf is done, then I get to ride? I know about the baby swap but this to me is more like an adult swap...right? Would this work on rides like SM, Thunder Mountain and Indy? I think those are the only two I'm really concerned about. Thanks.