If car camping, I would definately take sharpening gear. Full Sharpmaker kit with diamond rods and ultra fine rods, my leather belt for a strop, 1" x 30" belt sander, perhaps a buffer with paper wheels on them. I also have a power inverter that would convert the 12v car power outlet into 110v up to 650 watts.

If the location permitted (campground, event, etc rules considered) I'd put a sign in my Jeep window "Dull knives and axes don't have to stay that way".
Last time I went on a hiking trip, I took the full Sharpmaker kit, two diafolds, and the Duckfoot sharpener. Next time it will be the Spyderco Profile set and the Duckfoot only.