Does the park have bathrooms?

There is a bathroom attached to the big pavilion that's open to everyone.

Yes mostly in the summer from dusk to dawn

Yup

There is also port a potty by the baseball fields

Yes, the bathrooms are open during park hours. There are also lots of woods behind the park, though I am not advocating using them for a bathroom 😁

Yes but there only open at certain times of the day