All of our bases have very close supermarkets, all of them offering special food for people in diet or with intolerances.
Before check-in you can go for shopping and prepare your provisioning while we are cleaning and setting-up your yacht to let you go asap.
In any case whenever you'll decide to enter a port, you will always find supermarkets close to the marina: these are touristic ports intended exactly to serve you. So do not overload your galley, you can always refill it anywhere.