Voilà ce qu'on trouve sur le site de Copa Airlines, je ne sais pas si ça peut aider mais vous pourriez aussi contacter Copa pour voir s'ils peuvent vendre cette carte.
- Tourist Cards ("Tarjeta del Turista") is only valid for tourist purposes and can be issued to foreigners on pleasure trips to Cuba who have contracted a tourist programme or have made their hotel reservations (min. stay of 2 days) through any travel agency having commercial operations with the Cuban Tourism Enterprise officially recognized.
The card can be bought from a tour operator, any travel agency or airline authorized to sell tourist trips to Cuba or from Cuban embassies and consulates.
The card should be typed or filled out in block letters and the seal of the agency should be fixed on the back.
The card may be used only for one entry, within 180 days following the date of issue and authorizes the users to stay in Cuba for 30 days, for the time covered by the hotel reservation or tourist programme.
The stay in Cuba may be extended at Immigration authorities for a maximum of 30 days. Fee: USD 25.- (or equivalent in freely convertible currency).
Card must be bought in the country where the trip to Cuba has been arranged. NOTE: if passport contains a visa, Tourist Card is not required.
http://www.copaair.com/Sites/CC/EN/Pages/timatic.aspx