Can I leave and re-enter the park the same day?

Yes, you can leave and then re enter later. If you're leaving and want to return you stop by the ticket booth and get the same day pass to return.

Yes, they stamp your hand so you can re-enter. We went out to our car several times and back in with no problem

Ice cream shop is closed. Tattoo shops are closed too. Farris wheel wasn't available this past weekend and no Indians on the train. They did not advertise this on their website. Good thing we are in the area anyway. I definitely wouldn't drive out of my way to visit until they add some stuff back.

Yes!

They have in the past, precovid, stamped your hand to let you back in for the same day, unless things have changed.