For groceries your first day, your best bet will be the Grand Marche at Porto Cupecoy. You will be driving right by it from the airport on the way to Baie Nettle.

There is also a small French Market (used to be called the Royale, I forget it's current name) located in Baie Nettle (Nettle Bay). Also in Nettle Bay, there is a French Bakery where you can get wonderful morning pastries or a baquette.

And you best bet for Pizza to go is a Pizza place on your way to Marigot that is at the entrance to Simply Market.

Rah Rah Rasputin
They put some poison into his wine
He drank it all and said "I feel fine"