This is pretty much the perfect place to take your...
This is pretty much the perfect place to take your kids (or just yourself, it's fun for adults too!) during the pandemic. You don't have to get out of your car or interact with anyone (other than at the admission window). The animals are in much larger and more natural habitats than at the zoo, and in some cases you can get up very close to them. The cranes especially seem unafraid of cars.
The short hiking trail loop is nice, it's about halfway through the driving route, so it's an ideal spot to get out of the car for a bit. The drive through the park is surprisingly scenic for eastern Nebraska, even including a rocky "canyon" area.