I think they base their rates on the presumption that 2 people will share one site.. either a cabin, tent, camper, etc. So same cost if you're alone or you bring a date with you. I suspect you could probably share that with someone else too.. when you call to reserve ask Missy what the deal is, then post up so others will know too, thanks!
82 fj40, 99 uzj100, 06 gx470
97 DR650, 05 525EXC, 01 XT225, 09 TTR125, 07 TTR90, 07 CRF50