Wish I could help, but am looking for 2 day passes myself 9/16 or 17, already got hotel paid for with no refund option.
Summited last summer, had relied on walk up option, but think it will be very limited with new system.
Ranger told me yesterday, they’ve not figured out how to make no shoe permits available On Line, so it is only cancellations in advance that come available.
That will drastically reduce availability.
Best luck, hope to see you up there!