I don’t think the breakfast call is necessary, it’s enough to tell guests when the buffet opens and let them decide if they’ll go for it or not. Alternatively, allow guests to make wake call request
Traveloka Sdn Bhd (Registration No. 201501003122), Level 14 Tower 2, Menara Kembar Bank Rakyat, 33 Jalan Rakyat Brickfields, 50470 Kuala Lumpur, Malaysia