When is Aspers Casino open? Monday - Sunday: 10am – 4am. Do I need to be. Whether you're a gaming beginner or a professional, you can be sure of a warm and friendly welcome 24/7 at Aspers. Simply the best casino and leisure destination in Northampton. . Is there a door fee? Entry to Aspers Casino is free of charge. There is no door fee. Come and discover: Our elegant.