> When accepting/confirming overnight permits, does it really matter what you select as location?

Put down your best guess. That info is only used if you wind up missing, and then need to go looking for you. What you put down is the first place they might start looking.

So you can see it isn't that important. I think it is silly that they even require that upon accepting a reservation. It would be better to get that info when the permit is picked up.