Well I've started it, and enjoying it to a degree, but it's a bugfest atm.
Keepers wont fill up empty food and water bowls, hungry animals don't eat or drink. My warthogs are on deaths door because they wont eat or drink. Performance is also sketchy atm. I'm getting 40-50fps at max settings, but it has horrible stuttering problems. Sometimes, it just freezes for a second before going again. Probably nothing that can't be sorted with a driver update though. I've got a 2070S coming tomorrow, so it will be interesting to see if that's any different. It's very demanding though. Don't think you can play this on an old system.
On the plus side, it's extremely charming and easy to learn. the animal animations are great. Go close up to a tiger that's just come out of the pool and the wet fur animations are fantastic.