A few notes that may help food shoppers.

1) Regarding Meat:
Market Garden has a butcher on duty. Probably best place for fresh meat as you can order specific cuts and quantities from the butcher. They also carry a selection of specialty frozen meats. Airline cut chicken breast, veal rib chops, Lamb loin & rib chops, ground pork & lamb, Wagyu or Kobe beef, etc.

Le Grand Marche gets most of their meat chilled, but as of May, still had no butcher. Waiting to see if the upgrade brings a butcher on site. They have everything you would find in an North American market, plus some Dutch and French specialties and cuts.

2) Regarding Carrefour, they are France's largest food retailer.
For reading French labels, there are several off-line apps for your phone to translate as you scan. (translate & scan free app)

3) Le Grand Marche gets seafood fresh from Miami twice weekly. Usually Tuesday and Friday. Great selection. They also get occasional deliveries from France with shellfish and Med fish. Market Garden displays their fish on ice, right in the open. Not my favorite way to handle seafood.

4) Most of the markets have bag boys to bag your goods. Throw them a buck or two as they are not on the payroll.

Hope this info helps.