Unlike my Sturmey-Archer bikes, which leak oil if parked laid down on one side, I don't mind laying down my Rohloff bikes for a short period if there isn't a tree, fence or something else to lean against, for example for a lunch stop.
For longer periods, such as a night camping, I want the bike upright. I don't carry a Click-Stand, and doubt whether it would be sufficient to keep the bike standing in a Brittany storm.
So far I have always found something to lean the bike against (post, fence, tree) and to which I can attach my chain lock. The bike is also immobilised with a ring lock through the rear wheel. I now have a U lock with a long, fairly stout cable loop, which will replace my chain lock for future tours. The U lock works on small diameter posts and many types of fence, the cable loop is long enough to lock the bike to reasonably substantial tree.
If I am on a commercial campsite with washing and/or restaurant facilities I take my small rucksack with valuables with me and lock the pannier bags to the bike using the optional wire loop anti-theft devices on the Ortleib bags. The rear panniers can be locked with the ring lock and I have a small cable lock for the front panniers.
I tie a plastic bag over the saddle for the night and remove all bags, water and fuel bottles, and the cycle computer and take them at least inside the tent flysheet. If dry I generally take some of the bags inside the inner tent.
None of this will stop a determined thief, but it deters the opportunists.