The aquarium itself is great, but the parking paym...

The aquarium itself is great, but the parking payment system is outdated and awfully clunky. It just does not work well.
Also, I don't understand, why validating the parking ticket only gives you a discount, instead of validating the full price. Especially, since every vehicle generates at least $60 revenue. If this still is not cost effective, they could add full parking validation as an option at ticket purchase.
This saving on the wrong end was quite a downer when trying to leave this otherwise pleasant aquarium.