My Jack Russell, Snippy, has been out camping with me since she was old enough to. She absolutely loves it, never roams far, and is a great hot water bottle. It's good for them, a natural environment. Get the obedience training very well instilled in a Border. She'll want to go off and explore much more than Snippy, who just wants my bacon sarnie.
A happy camper.
Had this thing (Mimi) since October, her parents are both wiry Jacks, so I'm not too sure what's going on with this pup, but she's a little love and will be going camping with me too. 3 in a hammock, might be a long night awake for me, especially with those legs