Husband used to often go camping on his own. His biggest adventure was to spend a weeks wildcamping in and around the Knoidart peninsular in NW Scotland.
He had to take a heavy backpack with him and arranged for food pickups from isolated places.
I went with him on some of his backpacking trips, mostly in Derbyshire and the Lakes. We didn't camp in campsites, just on the top of hills and moors, far from anyone.
I'll never forget one night in a very compact double skinned tent, on top of a hill, when the wind nearly picked us up - we had to spread out our belongings to weigh the tent down.
I soon got fedup with the hardships and carrying heavy loads so he mostly went off on his own after that.
Our children came with us in the early camping days, they still talk about one outing in winter when we had to dig ourselves out of the snow and got told off by a sort of gamekeeper.