The casino has been closed since March 20. The Coeur d'Alene Casino Resort Hotel began a phased reopening April 27 in preparation for the general public to return on May 1. Read more Coeur d'Alene Casino reopens May 1 Ap. The new Discovery Den at Coeur d'Alene Casino offers casino guests the opportunity to play newly-designed casino games in their final testing phase before production. News Headlines Coeur d'Alene Casino adds Discovery Den gaming area Janu.