I am Googling on end, but thought it might be wise to ask this community for some information as well. Being from outside of the US makes it a bit more difficult to find your way in "USA camper land".
So last year we were with 4, which made a camper the most sensible choice of transportation. This year it will only be the 2 of us, so there might be better / cheaper options. Some bullet points in short;
[*] Pick-up at SF, if possible drop off at Billings.
[*] If that's difficult / far more expensive, we'll probably drive back to SF.
[*] A bed (and room to cargo 2 bikes and some luggage) would suffice
If any locals could pin-point some sites I would be very grateful!
Cheers