Grand Canyon to Yellowstone

I live up here. I wouldn't bring any RV/TT/fifth wheel up here then. We don't REALLY plow our roads like back east. We just sort of plow them down to an inch or two with NO chloride assistance and run through the mush with a bit of rough sand in slippery spots, usually Dec through March, sometimes longer. Did I tell you about the foot of snow we got on May 21st this year. 4WD/AWD and Trucks are NOT a luxury items here. I must admit that there are campers at Mammoth every year (Gardiner), like one or two, but I sure gotta wonder how they do it. W. Yellowstone has nothing I am aware of for camping in winter they do have a really nice RV parking lot for summer concrete pads and everything...except trees. Gardiner is the place to go to experience Yellowstone in the Winter. West Yellowstone is the place to go if you like snow mobiles...although there is some good cross country skiing also and the constant thrum of snow mobiles in the background. A couple of good restaurants there, also at Gardiner, but not much. The Mammoth Lodge is a great place to eat and except for this last Covid Xmas, have an amazing Xmas buffet. The Lamar Valley run is awesome in winter and even Cooke City has one restaurant in their snow mobile lodge worth a bite and ONE adult beverage...perhaps.