There is a lovely rustic restaurant just opposite the castle in Lourmarin which is a place we just love to visit. It specializes in crepes and steaks, not an obvious combo but they do both extremely well.
One Friday lunch I ordered a pichet of wine expecting the usual 1/4 litre but instead this 50cm tall vessel arrived with what must have been a litre of local provincial red. Always a little stubborn I decided that this needed draining even if it meant me sleeping for the rest of the afternoon.
It was only after I had finished that I twizzled the vessel around to see that it was calibrated and yes, you just paid for what you drank.
Thing is, I just might make the same mistake this year.
If you go on a Friday you can wander around the market to build up your appetite before eating.