Booked the Prambanan temple tickets the day before our visit on the app. We were issued an e-voucher and could gain entry to the temple by showing it to the staff when we arrive. It was a seamless experience.
Traveloka Sdn Bhd (Registration No. 201501003122), Level 14 Tower 2, Menara Kembar Bank Rakyat, 33 Jalan Rakyat Brickfields, 50470 Kuala Lumpur, Malaysia