How can this be possible?

Today we left lovely old Carcassonne and had lunch at a place called Marseillan. We only stopped because my friend has a  bit of a coffee habit, the place looked like a typical touristy family holiday resort sort of place but we noticed an interesting eatery in a road of eating places that was pretty and quirky and absolutely packed - a good sign.  We read the menu ...

Whilst pondering we each drank a Sangria, which was not as I think of Sangria at all but was rich and deep and port-like.

Then for €12.90 which at today's exchange rate is £10.88 I had ...

Soup de Poissons 

avec accoutrements!

Gambas Marinée

with several sauces and fragrant rice

Gauffre Chocolat & Espresso

Not bad, eh?  The meal came with a generous basket of bread and a bottle of iced water. The service was absolutely superb, the place well kept and the price included various taxes. How can they do this?

One more question ...

We saw the sea for the first time since getting off the boat at Roscoff (actually we didn't see it then - thick fog) and beside the beach was a sign telling you what you can't do on it.  I understood the first four but what is this one ...

... Face interdit?