It has been a bajillion years since I personally have put rider switch to use. Way back when we did it, everyone would check in and the rider switch pass was set up. Parent 1 would ride while parent 2 did something else with the kids. Parent 2 could ride ANYTIME thereafter. So, what we planned was that parent 2 would ride the thing at the end of the morning while parent 2 would head back to the hotel with the kids and then catch up after riding - or alternatively parent 2 could head back to the park slightly ahead of parent 1 and kids and use the rider switch pass before we all met up agin.
Does that still work?
I’m thinking of recommending that my cousin’s family present to FOP to set up rider switch to use in this way.