This Memorial Day weekend, and all summer long, guests can enjoy all that Atlantic City has to offer with world-class entertainment, beaches, food and shopping. As Atlantic City Celebrates 45 Years of Gaming, Casinos Welcome Visitors Back to Resort Destination for Memorial Day WeekendĪtlantic City, NJ – As Memorial Day approaches, Atlantic City is preparing to mark 45 years since the first casino hotel outside of Nevada opened in the resort destination.