Rider Swap is to minimize waiting so that parents can both ride attractions their child(ren) cannot thus if she WAS tall enough to ride you would NOT be issued a swap pass.
Right. That's what I thought. But if you have 2 kids - 1 tall enough, 1 not, then one parent and a kid can go on the ride and the other parent use the Rider Swap pass and go back on the ride again with the tall kid, so the tall kid rides it twice, right?