However, here are a few links to accommodation that might interest you (with a small discount on prices)
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Hotels
Ibis Hotel in Calais Nord, with special rates: https://all.accor.com/hotel/7209/index.fr.shtml

Accommodation:
Lots of air bnb accommodation in Calais! Here are a few, run by people we know.
– a superb flat facing the sea ( 4 travellers) 5 km from the town hall. Link to page (Contact Stéphane: 06 25 05 70 51)

– a small house with 3 beds (5 travellers). Not far from the sea, 5 km from the town hall: link to page ( Contact Séverine: 06 23 26 25 06)

For groups
Two links to group accommodation. If you are looking for very reasonably priced accommodation for groups. The first is that of a club member
Le spot: a friendly group gîte sleeping 12 (5 bedrooms). Located in Blériot Plage, near the sea and about 10 km from the games room:
https://lespotbleriotplage.com ( Contact Christophe)

Base Tom Souville: a large nautical base, also at Blériot Plage, with very attractive prices: https://tomsouville.fr/sejours/