Don't know if they were in force last summer, but we anchored in La Corderie last summer, along with about 10 other boats. We also anchored in La Chambre a few days later with about 30 other boats. No problems on either occasion.
If I had a three day weekend that's where I'd be going now, but I can't leave until tomorrow afternoon, so it's Granville or Chausey instead and back on Sunday. enjoy the weekend.
I was there 10 days ago and there would appear to be no problem in either La Chambre or the Corderie. Boats everywhere but I have never seen it so empty.
I was there 7 years ago and there was copious evidence of toilet use at low tide!!. Children swim nearby. If you use the basin just keep the heads locked up - please.