I think you would be fine if you were left alone to get on with it.
But the problem is you might not be.
I wouldn't fancy being subject to emergency regulations in a foreign country with a language barrier and not understanding how the various arms of that state work.
Negotiating your way through the restrictions would not be easy.
First time for everything: I agree with
@Pale Rider. Off the top of my head I can think of the following scenarios:
- If you got sick, you'd be screwed
- If they implemented a lockdown, you'd be screwed
- If your trip proceeded uneventfully but you arrived in Ouistreham to find the port closed, you'd be screwed
- If they shut the patisseries you'd be very screwed
By all means hold off cancelling as long as you can but operate on the basis of "no tour"
Edit to add: while you could do wild camping or stay in aires even if they are shut down (several of the campsites I stayed in on my tour were in closed season), but in the event of a lockdown or panic buying situation you would find food and water difficult to come by.