Although buying tickets online might seem like a time-saving option, it's not. Waiting in line for staff to verify the code takes much longer than buying tickets directly at the aquarium. I've been to many aquariums in various countries, but I find the verification process here the longest and most cumbersome. If you already have the QR code on your ticket, you can just scan it and enter the aquarium. But here, you have to verify at two different gates and wait quite a while. I strongly criticize this aspect. The management should review and improve this step. Otherwise, I found it very good; there's nothing to criticize. Many shows are very interesting, like the mermaid show or the seal show.