Booking this with Traveloka was so easy and hassle free! My trip to Yehliu was unexpected so I didn't book my admission ticket in advance. I booked it few minutes before arriving at Yehliu and with just few clicks I already have my E-voucher. Redeeming was so easy and fast since I didn't need to line up, I just went to the entrance gate and showed my evoucher and right after they scan the qr code I'm good to go. Will surely book my next activity with Traveloka!