Does anyone know what kind of restrooms they have(structure or port o john) thanks!

Portable

Mens room is Porta John, Womens is flush toilets

Lots of very clean modern port o John's.

They have bathrooms for handicapped and regular ones. Nice and clean

There are both. Some of the new installations are flush, the older restroom locations are portapots.

Womens is flush toilets , Mens room is Porta John

Inside they have flush toilets