If that is the scenario, you must mail your ask for by email, inside just one thirty day period of the date for which the reservation was made, to aid-billetterie@louvre.fr or by post to Musée du Louvre – Guidance billetterie – 75058 PARIS CEDEX 01. The sale of tickets https://www.getyourguide.ru/paris-l16/paris-eiffel-tower-summit-or-second-floor-access-t62484/?partner_id=KKUE1H6&cmp=CL