Yes !
Explanation of the park is : in other zoos the hippos don't stay in water because the water is not warm. Here the water is always heated so the hippos will stay in. They don't need more land
I suppose not. There is no sign of a possible aviary on the pygmy hippos (as expected on the past documents) and I know it was dropped before the arrivals of the hippos.
I think the original idea couldn't be done properly and there is not enough land for primates.