Reposting, the original does not seem to be here anymore:
Anyone know offhand how it is handled if someone wants to drive from city to city? My parents want to drive the route while I ride. I saw something about non-riders, but I cannot seem to find good info on how this works. Do they have to register? Do they stay at the same campsites the riders do? Can they still register? I thought I saw earlier that the non-rider stuff closes later than rider, but I cannot find that so I might be mis-remembering.