Yes, Disneyland is open for Christmas. The park is decorated with festive lights, ornaments, and decorations to create a magical atmosphere for the holiday season. There are many special holiday events and attractions that take place during this time, including the Christmas Parade, Mickey's Once Upon a Christmas Time Parade, and the Christmas Fantasy Parade. In addition to the traditional rides and attractions, there are also many holiday-themed entertainment options, such as the Haunted Mansion Holiday, the Christmas version of the "it's a small world" ride, and the Christmas Carolers.