This was perhaps the most disappointing place we visited in San Sebastian.
From the very first minute, it felt like they were trying to make money on literally everything. First, you have to pay to enter the grounds—3 euros per person, not per car. Then, almost all the attractions are paid separately, there are huge lines everywhere, and even the toilets are paid.
All day, we never felt like the cost was worth it. On the contrary, it seemed like they were simply trying to extract as much from visitors as possible.
The complex itself didn't particularly impress us. There are much more interesting places with beautiful views and entertainment where you don't have to pay for every step.
Personally, I don't recommend wasting your time or money on this place. In my opinion, it's more focused on making money off tourists than providing them with a truly enjoyable experience.