The grocery shop is open from the 18th of May to the 3th of September from 8.30 am to midday and 4pm to 7pm (from 8am to 8pm in July and August)
It supplies basic products as well as prepared meals. You can buy various drinks : still or sparkling water, sodas, wines and beers. You can even get some UK newspapers. Just remember to bring your basket.
You can also buy bread and croissants for breakfast.