A bit of information for your next trip. We are camping this weekend & we always get sites 37, 38, 39, 40 (if available - pull thru), 41 & 42. We get at least one extra site for parking. These sites are any where from 38' to 40' for vehicle length. Your site is only 12', but shows a 20' driveway, if I remember correctly, it is an odd shape site. Also it's in the tight spot of a curve in the loop. Some people do park by the side of the road & are in the way & makes it hard to make that turn, there was a big stump on the opposite side that I have hit in the past trying to make it through there in the dark (arriving late).
My brother gets site 37 & he is able to park his RV with tow tralier, his Jeep & his wife's car. That site is wide enough to park double at the back.
I have heard that a new FS Ranger has been giving tickets for anyone parking off the pavement of their campsite. In the past we have parked beside our trailers & campers with our trucks, not in the woods but off the pavement & I think thats over for now.