No idea how Disney does their passes
UO will check the wait time for the ride you want and if it is 29 minutes or less for a wait, they allow you to get in line then using the card
if the present wait time is 30 or more minutes, your card will have the start time you can return for that ride
believe they calculate present time minus half of it and write on the assistant card time you can re-enter using the ep line
We used it this Feb for my granddaughter that has MS and in a wc