We leave Saturday and have been wondering the following about the Parent Swap...It will bew DH, me, and DS(22months) so there are a few rides that DH and I would like to go on that DS cannot. Can we parent swap from the singles line? One would be going on the rides alone, getting off, then passing off DS so that the other adult can ride. So we would each be a single rider. Is this allowed? Thanks for any help!