Are you going on foot or driving?
If you are driving, here are the best hypermarkets in Calais. You can click on each to get directions and a map to get there.
http://www.dover-to-calais.com/auchan_ca…
Auchan generously name their biggest rivals and you only have to click on the names to find their whereabouts.
We regularly stock up in Calais but we prefer to avoid driving in the centre, which can be quite hair raising, let alone parking. Along the years we have found that the best choice offered for wine and beer is actually often at the Auchan hypermarket and near-by Sainsbury's. It is easy to get to on the Calais by-pass, and the same facilities of payment in £ as well as € exist there too with a very fair rate of exchange on the slip. We bought some Roc-de- Lussac there for four Euros a bottle and found that the same bottles were sold for £12 in England. Liqueurs and other spirits are also cheaper there than on the ferries or at the Euro tunnel shop and considerably cheaper than in England.
At the moment there are some great pre-Christmas offers. We bought excellent Champagne at a very good price only ten days ago.