I have driven through Grand Case and walked through it as well many times. , Parking is an issue. Where does one park if you are eating at one of the restaurants ??? Are there any public parking lots and how do you pay ???
There is also a free lot almost directly across from Le Pressoir although a guy may ask for money to wash (watch) your car Also La Villa offers valet complimentary. Can usually find a spot in church parking area
Sorry for the late reply, but if you go past the church, on the left, there is a parking area with an attendant - 5 dollars or euros, and last year he was giving out a coupon that was accepted at many of the restaurants for a $5 dollar credit. We parked there this year once or twice, but never asked about the coupon , so not sure if he still does that.