Pre-Paid Fuel for Day Riders?

What will be the Pre-Paid fuel procedure for those not going All The Way? Do we pay each morning and receive a sticker? Do we pay at Registration and receive a sticker? Do we pay at each gas pump? How will the Fueling Team know that we have paid? Or do we just hang around until the pack has finished up and then fuel on our own?

Last year, I signed in at Limon, CO on the Central Route and paid for a fuel sticker from there to DC. Midway may do it differently but that was my experience on Central. It was reduced from the full “All the Way” rate as well.