Big is not the right word! A huge park. You can drive around the sights by car. It takes a hell of a lot of time (about 2 hours minimum!)!!!! Of course, there are more bikes, by the way, there are bike paths. And it's probably walking for days....
The park is large. You can drive around it in your car, entry is until 16:00, departure is not formally limited (until dark).
There is a bicycle rental service, both simple and electric. But you need to take it out before lunch to give it strictly before 16
Fantastic landscapes. I was in February, I was not tormented by the heat.